157440355 has 4 divisors (see below), whose sum is σ = 188928432. Its totient is φ = 125952280.

The previous prime is 157440347. The next prime is 157440373. The reversal of 157440355 is 553044751.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 157440355 - 2³ = 157440347 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157440355.

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 3 ways as a sum of consecutive naturals, for example, 15744031 + ... + 15744040.

It is an arithmetic number, because the mean of its divisors is an integer number (47232108).

Almost surely, 2^157440355 is an apocalyptic number.

157440355 is a deficient number, since it is larger than the sum of its proper divisors (31488077).

157440355 is an equidigital number, since it uses as much as digits as its factorization.

157440355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31488076.

The product of its (nonzero) digits is 42000, while the sum is 34.

The square root of 157440355 is about 12547.5238593118. The cubic root of 157440355 is about 539.9729696118.

The spelling of 157440355 in words is "one hundred fifty-seven million, four hundred forty thousand, three hundred fifty-five".