157629451 has 16 divisors (see below), whose sum is σ = 186400768. Its totient is φ = 130442400.

The previous prime is 157629431. The next prime is 157629503. The reversal of 157629451 is 154926751.

It is a cyclic number.

It is not a de Polignac number, because 157629451 - 2²³ = 149240843 is a prime.

It is a super-2 number, since 2×157629451² = 49694087645122802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (157629421) 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, 158566 + ... + 159556.

It is an arithmetic number, because the mean of its divisors is an integer number (11650048).

Almost surely, 2^157629451 is an apocalyptic number.

157629451 is a deficient number, since it is larger than the sum of its proper divisors (28771317).

157629451 is an equidigital number, since it uses as much as digits as its factorization.

157629451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1762.

The product of its digits is 75600, while the sum is 40.

The square root of 157629451 is about 12555.0567899950. The cubic root of 157629451 is about 540.1890638844.

The spelling of 157629451 in words is "one hundred fifty-seven million, six hundred twenty-nine thousand, four hundred fifty-one".