157070409 has 16 divisors (see below), whose sum is σ = 217149120. Its totient is φ = 100869440.

The previous prime is 157070401. The next prime is 157070411. The reversal of 157070409 is 904070751.

It is a cyclic number.

It is not a de Polignac number, because 157070409 - 2³ = 157070401 is a prime.

It is a super-2 number, since 2×157070409² = 49342226766854562, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 157070409.

It is not an unprimeable number, because it can be changed into a prime (157070401) by changing a digit.

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, 40879 + ... + 44555.

It is an arithmetic number, because the mean of its divisors is an integer number (13571820).

Almost surely, 2^157070409 is an apocalyptic number.

It is an amenable number.

157070409 is a deficient number, since it is larger than the sum of its proper divisors (60078711).

157070409 is a wasteful number, since it uses less digits than its factorization.

157070409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4200.

The product of its (nonzero) digits is 8820, while the sum is 33.

The square root of 157070409 is about 12532.7733961801. The cubic root of 157070409 is about 539.5497034852.

The spelling of 157070409 in words is "one hundred fifty-seven million, seventy thousand, four hundred nine".