157556429 has 4 divisors (see below), whose sum is σ = 161220576. Its totient is φ = 153892284.

The previous prime is 157556423. The next prime is 157556437. The reversal of 157556429 is 924655751.

It is a happy number.

157556429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 924655751 = 61 ⋅15158291.

It is a cyclic number.

It is not a de Polignac number, because 157556429 - 2²⁴ = 140779213 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 157556429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157556423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1832009 + ... + 1832094.

It is an arithmetic number, because the mean of its divisors is an integer number (40305144).

Almost surely, 2^157556429 is an apocalyptic number.

It is an amenable number.

157556429 is a deficient number, since it is larger than the sum of its proper divisors (3664147).

157556429 is an equidigital number, since it uses as much as digits as its factorization.

157556429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3664146.

The product of its digits is 378000, while the sum is 44.

The square root of 157556429 is about 12552.1483818508. The cubic root of 157556429 is about 540.1056366268.

The spelling of 157556429 in words is "one hundred fifty-seven million, five hundred fifty-six thousand, four hundred twenty-nine".