157271145 has 16 divisors (see below), whose sum is σ = 252450432. Its totient is φ = 83605760.

The previous prime is 157271141. The next prime is 157271161. The reversal of 157271145 is 541172751.

It is not a de Polignac number, because 157271145 - 2² = 157271141 is a prime.

It is a super-2 number, since 2×157271145² = 49468426099222050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (157271141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12192 + ... + 21521.

It is an arithmetic number, because the mean of its divisors is an integer number (15778152).

Almost surely, 2^157271145 is an apocalyptic number.

157271145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

157271145 is a deficient number, since it is larger than the sum of its proper divisors (95179287).

157271145 is a wasteful number, since it uses less digits than its factorization.

157271145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34032.

The product of its digits is 9800, while the sum is 33.

The square root of 157271145 is about 12540.7792820064. The cubic root of 157271145 is about 539.7794538328.

The spelling of 157271145 in words is "one hundred fifty-seven million, two hundred seventy-one thousand, one hundred forty-five".