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151901461 = 1194112721
BaseRepresentation
bin10010000110111…
…01010100010101
3101120211101122001
421003131110111
5302341321321
623023435301
73523066255
oct1103352425
9346741561
10151901461
11788208a8
1242a55b31
132561652a
1416261965
15d507c91
hex90dd515

151901461 has 4 divisors (see below), whose sum is σ = 151926124. Its totient is φ = 151876800.

The previous prime is 151901441. The next prime is 151901467. The reversal of 151901461 is 164109151.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 164109151 = 1321124231.

It can be written as a sum of positive squares in 2 ways, for example, as 89586225 + 62315236 = 9465^2 + 7894^2 .

It is a cyclic number.

It is not a de Polignac number, because 151901461 - 25 = 151901429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151901467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5581 + ... + 18301.

It is an arithmetic number, because the mean of its divisors is an integer number (37981531).

Almost surely, 2151901461 is an apocalyptic number.

It is an amenable number.

151901461 is a deficient number, since it is larger than the sum of its proper divisors (24663).

151901461 is a wasteful number, since it uses less digits than its factorization.

151901461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24662.

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 151901461 is about 12324.8310738931. The cubic root of 151901461 is about 533.5649795379.

The spelling of 151901461 in words is "one hundred fifty-one million, nine hundred one thousand, four hundred sixty-one".

Divisors: 1 11941 12721 151901461