151557887 has 4 divisors (see below), whose sum is σ = 163216200. Its totient is φ = 139899576.

The previous prime is 151557877. The next prime is 151557893. The reversal of 151557887 is 788755151.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 151557887 - 2¹² = 151553791 is a prime.

It is a super-2 number, since 2×151557887² = 45939586223809538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151557827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5829137 + ... + 5829162.

It is an arithmetic number, because the mean of its divisors is an integer number (40804050).

Almost surely, 2^151557887 is an apocalyptic number.

151557887 is a deficient number, since it is larger than the sum of its proper divisors (11658313).

151557887 is a wasteful number, since it uses less digits than its factorization.

151557887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11658312.

The product of its digits is 392000, while the sum is 47.

The square root of 151557887 is about 12310.8848991451. The cubic root of 151557887 is about 533.1623996051.

The spelling of 151557887 in words is "one hundred fifty-one million, five hundred fifty-seven thousand, eight hundred eighty-seven".