612241257 has 16 divisors (see below), whose sum is σ = 839185920. Its totient is φ = 396749952.

The previous prime is 612241249. The next prime is 612241261. The reversal of 612241257 is 752142216.

It is not a de Polignac number, because 612241257 - 2³ = 612241249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (612241297) 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, 157813 + ... + 161645.

It is an arithmetic number, because the mean of its divisors is an integer number (52449120).

Almost surely, 2^612241257 is an apocalyptic number.

It is an amenable number.

612241257 is a deficient number, since it is larger than the sum of its proper divisors (226944663).

612241257 is a wasteful number, since it uses less digits than its factorization.

612241257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5312.

The product of its digits is 6720, while the sum is 30.

The square root of 612241257 is about 24743.5093913535. The cubic root of 612241257 is about 849.1300243005.

It can be divided in two parts, 61224 and 1257, that added together give a triangular number (62481 = T₃₅₃).

The spelling of 612241257 in words is "six hundred twelve million, two hundred forty-one thousand, two hundred fifty-seven".