157900249 has 12 divisors (see below), whose sum is σ = 171648876. Its totient is φ = 145184832.

The previous prime is 157900229. The next prime is 157900261. The reversal of 157900249 is 942009751.

It can be written as a sum of positive squares in 6 ways, for example, as 8082649 + 149817600 = 2843^2 + 12240^2 .

It is not a de Polignac number, because 157900249 - 2¹¹ = 157898201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157900229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45127 + ... + 48499.

It is an arithmetic number, because the mean of its divisors is an integer number (14304073).

Almost surely, 2^157900249 is an apocalyptic number.

It is an amenable number.

157900249 is a deficient number, since it is larger than the sum of its proper divisors (13748627).

157900249 is a wasteful number, since it uses less digits than its factorization.

157900249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3676 (or 3663 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 157900249 is about 12565.8365817800. The cubic root of 157900249 is about 540.4982244486.

The spelling of 157900249 in words is "one hundred fifty-seven million, nine hundred thousand, two hundred forty-nine".