157444805 has 16 divisors (see below), whose sum is σ = 221761920. Its totient is φ = 105043392.

The previous prime is 157444787. The next prime is 157444813. The reversal of 157444805 is 508444751.

It is a cyclic number.

It is not a de Polignac number, because 157444805 - 2²⁶ = 90335941 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 59495 + ... + 62084.

It is an arithmetic number, because the mean of its divisors is an integer number (13860120).

Almost surely, 2^157444805 is an apocalyptic number.

It is an amenable number.

157444805 is a deficient number, since it is larger than the sum of its proper divisors (64317115).

157444805 is a wasteful number, since it uses less digits than its factorization.

157444805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121628.

The product of its (nonzero) digits is 89600, while the sum is 38.

The square root of 157444805 is about 12547.7011838822. The cubic root of 157444805 is about 539.9780569501.

The spelling of 157444805 in words is "one hundred fifty-seven million, four hundred forty-four thousand, eight hundred five".