88345591 has 2 divisors, whose sum is σ = 88345592. Its totient is φ = 88345590.

The previous prime is 88345577. The next prime is 88345613. The reversal of 88345591 is 19554388.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 88345591 - 2¹⁵ = 88312823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88345501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44172795 + 44172796.

It is an arithmetic number, because the mean of its divisors is an integer number (44172796).

Almost surely, 2^88345591 is an apocalyptic number.

88345591 is a deficient number, since it is larger than the sum of its proper divisors (1).

88345591 is an equidigital number, since it uses as much as digits as its factorization.

88345591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 43.

The square root of 88345591 is about 9399.2335325813. The cubic root of 88345591 is about 445.3775208170.

The spelling of 88345591 in words is "eighty-eight million, three hundred forty-five thousand, five hundred ninety-one".