157555281 has 16 divisors (see below), whose sum is σ = 227392704. Its totient is φ = 96460224.

The previous prime is 157555261. The next prime is 157555283. The reversal of 157555281 is 182555751.

It is a happy number.

It is not a de Polignac number, because 157555281 - 2⁶ = 157555217 is a prime.

It is a super-2 number, since 2×157555281² = 49647333141977922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (157555283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2571 + ... + 17936.

It is an arithmetic number, because the mean of its divisors is an integer number (14212044).

Almost surely, 2^157555281 is an apocalyptic number.

It is an amenable number.

157555281 is a deficient number, since it is larger than the sum of its proper divisors (69837423).

157555281 is a wasteful number, since it uses less digits than its factorization.

157555281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20720.

The product of its digits is 70000, while the sum is 39.

The square root of 157555281 is about 12552.1026525439. The cubic root of 157555281 is about 540.1043248369.

The spelling of 157555281 in words is "one hundred fifty-seven million, five hundred fifty-five thousand, two hundred eighty-one".