157537943 has 4 divisors (see below), whose sum is σ = 157615728. Its totient is φ = 157460160.

The previous prime is 157537909. The next prime is 157537969. The reversal of 157537943 is 349735751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 349735751 = 971 ⋅360181.

It is a cyclic number.

It is not a de Polignac number, because 157537943 - 2¹⁰ = 157536919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 157537894 and 157537903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157537903) 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, 35771 + ... + 39932.

It is an arithmetic number, because the mean of its divisors is an integer number (39403932).

Almost surely, 2^157537943 is an apocalyptic number.

157537943 is a deficient number, since it is larger than the sum of its proper divisors (77785).

157537943 is an equidigital number, since it uses as much as digits as its factorization.

157537943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77784.

The product of its digits is 396900, while the sum is 44.

The square root of 157537943 is about 12551.4119922820. The cubic root of 157537943 is about 540.0845123786.

The spelling of 157537943 in words is "one hundred fifty-seven million, five hundred thirty-seven thousand, nine hundred forty-three".