88421157 has 48 divisors (see below), whose sum is σ = 145117440. Its totient is φ = 51408000.

The previous prime is 88421153. The next prime is 88421161. The reversal of 88421157 is 75112488.

88421157 is a `hidden beast` number, since 88 + 421 + 157 = 666.

It is an interprime number because it is at equal distance from previous prime (88421153) and next prime (88421161).

It is not a de Polignac number, because 88421157 - 2² = 88421153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88421153) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 369844 + ... + 370082.

It is an arithmetic number, because the mean of its divisors is an integer number (3023280).

Almost surely, 2^88421157 is an apocalyptic number.

It is an amenable number.

88421157 is a deficient number, since it is larger than the sum of its proper divisors (56696283).

88421157 is a wasteful number, since it uses less digits than its factorization.

88421157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 391 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 88421157 is about 9403.2524692257. The cubic root of 88421157 is about 445.5044685090.

It can be divided in two parts, 8842 and 1157, that added together give a palindrome (9999).

The spelling of 88421157 in words is "eighty-eight million, four hundred twenty-one thousand, one hundred fifty-seven".