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151005157 = 1213124489
BaseRepresentation
bin10010000000000…
…10011111100101
3101112010212010121
421000002133211
5302124131112
622552321541
73512344162
oct1100023745
9345125117
10151005157
1178269456
12426a32b1
1325391584
14160ab069
15d3cc407
hex90027e5

151005157 has 4 divisors (see below), whose sum is σ = 151130860. Its totient is φ = 150879456.

The previous prime is 151005133. The next prime is 151005161. The reversal of 151005157 is 751500151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 751500151 = 1381544171.

It can be written as a sum of positive squares in 2 ways, for example, as 9728161 + 141276996 = 3119^2 + 11886^2 .

It is a cyclic number.

It is not a de Polignac number, because 151005157 - 211 = 151003109 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 (151005187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61032 + ... + 63457.

It is an arithmetic number, because the mean of its divisors is an integer number (37782715).

Almost surely, 2151005157 is an apocalyptic number.

It is an amenable number.

151005157 is a deficient number, since it is larger than the sum of its proper divisors (125703).

151005157 is a wasteful number, since it uses less digits than its factorization.

151005157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125702.

The product of its (nonzero) digits is 875, while the sum is 25.

The square root of 151005157 is about 12288.4155610070. The cubic root of 151005157 is about 532.5134642132.

The spelling of 151005157 in words is "one hundred fifty-one million, five thousand, one hundred fifty-seven".

Divisors: 1 1213 124489 151005157