155612645 has 16 divisors (see below), whose sum is σ = 198385200. Its totient is φ = 116772864.

The previous prime is 155612623. The next prime is 155612663. The reversal of 155612645 is 546216551.

It can be written as a sum of positive squares in 8 ways, for example, as 19166884 + 136445761 = 4378^2 + 11681^2 .

It is not a de Polignac number, because 155612645 - 2⁸ = 155612389 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23681 + ... + 29529.

It is an arithmetic number, because the mean of its divisors is an integer number (12399075).

Almost surely, 2^155612645 is an apocalyptic number.

It is an amenable number.

155612645 is a deficient number, since it is larger than the sum of its proper divisors (42772555).

155612645 is a wasteful number, since it uses less digits than its factorization.

155612645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6184.

The product of its digits is 36000, while the sum is 35.

The square root of 155612645 is about 12474.4797486709. The cubic root of 155612645 is about 537.8753333028.

The spelling of 155612645 in words is "one hundred fifty-five million, six hundred twelve thousand, six hundred forty-five".