157253444 has 6 divisors (see below), whose sum is σ = 275193534. Its totient is φ = 78626720.

The previous prime is 157253431. The next prime is 157253449. The reversal of 157253444 is 444352751.

It can be written as a sum of positive squares in only one way, i.e., 111555844 + 45697600 = 10562^2 + 6760^2 .

It is a super-2 number, since 2×157253444² = 49457291299722272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (157253449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19656677 + ... + 19656684.

It is an arithmetic number, because the mean of its divisors is an integer number (45865589).

Almost surely, 2^157253444 is an apocalyptic number.

It is an amenable number.

157253444 is a deficient number, since it is larger than the sum of its proper divisors (117940090).

157253444 is a wasteful number, since it uses less digits than its factorization.

157253444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39313365 (or 39313363 counting only the distinct ones).

The product of its digits is 67200, while the sum is 35.

The square root of 157253444 is about 12540.0735245053. The cubic root of 157253444 is about 539.7592021954.

The spelling of 157253444 in words is "one hundred fifty-seven million, two hundred fifty-three thousand, four hundred forty-four".