151557 has 12 divisors (see below), whose sum is σ = 235296. Its totient is φ = 86520.

The previous prime is 151553. The next prime is 151561. The reversal of 151557 is 755151.

It is an interprime number because it is at equal distance from previous prime (151553) and next prime (151561).

It is not a de Polignac number, because 151557 - 2² = 151553 is a prime.

151557 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 369 + ... + 662.

It is an arithmetic number, because the mean of its divisors is an integer number (19608).

2¹⁵¹⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

151557 is a deficient number, since it is larger than the sum of its proper divisors (83739).

151557 is a wasteful number, since it uses less digits than its factorization.

151557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048 (or 1041 counting only the distinct ones).

The product of its digits is 875, while the sum is 24.

The square root of 151557 is about 389.3032237216. The cubic root of 151557 is about 53.3161359483.

The spelling of 151557 in words is "one hundred fifty-one thousand, five hundred fifty-seven".