157309443 has 24 divisors (see below), whose sum is σ = 238107168. Its totient is φ = 99889152.

The previous prime is 157309441. The next prime is 157309463. The reversal of 157309443 is 344903751.

It is not a de Polignac number, because 157309443 - 2¹ = 157309441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 157309398 and 157309407.

It is not an unprimeable number, because it can be changed into a prime (157309441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51721 + ... + 54677.

It is an arithmetic number, because the mean of its divisors is an integer number (9921132).

Almost surely, 2^157309443 is an apocalyptic number.

157309443 is a deficient number, since it is larger than the sum of its proper divisors (80797725).

157309443 is a wasteful number, since it uses less digits than its factorization.

157309443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3243 (or 3240 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 157309443 is about 12542.3061276625. The cubic root of 157309443 is about 539.8232652086.

The spelling of 157309443 in words is "one hundred fifty-seven million, three hundred nine thousand, four hundred forty-three".