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145031051 = 11311014211
BaseRepresentation
bin10001010010011…
…11111110001011
3101002220100012102
420221033332023
5244111443201
622220304015
73410513024
oct1051177613
9332810172
10145031051
1174958a80
12406a200b
132407c2b9
1415393c4b
15caec26b
hex8a4ff8b

145031051 has 16 divisors (see below), whose sum is σ = 164975616. Its totient is φ = 126300000.

The previous prime is 145031039. The next prime is 145031111. The reversal of 145031051 is 150130541.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-145031051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145031021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32336 + ... + 36546.

It is an arithmetic number, because the mean of its divisors is an integer number (10310976).

Almost surely, 2145031051 is an apocalyptic number.

145031051 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

145031051 is a deficient number, since it is larger than the sum of its proper divisors (19944565).

145031051 is a wasteful number, since it uses less digits than its factorization.

145031051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4354.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 145031051 is about 12042.8838323717. The cubic root of 145031051 is about 525.3962855284.

Adding to 145031051 its reverse (150130541), we get a palindrome (295161592).

The spelling of 145031051 in words is "one hundred forty-five million, thirty-one thousand, fifty-one".

Divisors: 1 11 31 101 341 1111 3131 4211 34441 46321 130541 425311 1435951 4678421 13184641 145031051