157563433 has 4 divisors (see below), whose sum is σ = 157798228. Its totient is φ = 157328640.

The previous prime is 157563407. The next prime is 157563443. The reversal of 157563433 is 334365751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 334365751 = 139 ⋅2405509.

It can be written as a sum of positive squares in 2 ways, for example, as 106254864 + 51308569 = 10308^2 + 7163^2 .

It is a cyclic number.

It is not a de Polignac number, because 157563433 - 2⁹ = 157562921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 157563392 and 157563401.

It is not an unprimeable number, because it can be changed into a prime (157563443) 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, 116388 + ... + 117733.

It is an arithmetic number, because the mean of its divisors is an integer number (39449557).

Almost surely, 2^157563433 is an apocalyptic number.

It is an amenable number.

157563433 is a deficient number, since it is larger than the sum of its proper divisors (234795).

157563433 is an equidigital number, since it uses as much as digits as its factorization.

157563433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234794.

The product of its digits is 113400, while the sum is 37.

The square root of 157563433 is about 12552.4273748148. The cubic root of 157563433 is about 540.1136397781.

The spelling of 157563433 in words is "one hundred fifty-seven million, five hundred sixty-three thousand, four hundred thirty-three".