88315921 has 2 divisors, whose sum is σ = 88315922. Its totient is φ = 88315920.

The previous prime is 88315907. The next prime is 88315957. The reversal of 88315921 is 12951388.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60606225 + 27709696 = 7785^2 + 5264^2 .

It is a cyclic number.

It is not a de Polignac number, because 88315921 - 2⁵ = 88315889 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (88315321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44157960 + 44157961.

It is an arithmetic number, because the mean of its divisors is an integer number (44157961).

Almost surely, 2^88315921 is an apocalyptic number.

It is an amenable number.

88315921 is a deficient number, since it is larger than the sum of its proper divisors (1).

88315921 is an equidigital number, since it uses as much as digits as its factorization.

88315921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 37.

The square root of 88315921 is about 9397.6550798590. The cubic root of 88315921 is about 445.3276566775.

The spelling of 88315921 in words is "eighty-eight million, three hundred fifteen thousand, nine hundred twenty-one".