88431457 has 2 divisors, whose sum is σ = 88431458. Its totient is φ = 88431456.

The previous prime is 88431391. The next prime is 88431463. The reversal of 88431457 is 75413488.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56610576 + 31820881 = 7524^2 + 5641^2 .

It is a cyclic number.

It is not a de Polignac number, because 88431457 - 2¹¹ = 88429409 is a prime.

It is not a weakly prime, because it can be changed into another prime (88434457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44215728 + 44215729.

It is an arithmetic number, because the mean of its divisors is an integer number (44215729).

Almost surely, 2^88431457 is an apocalyptic number.

It is an amenable number.

88431457 is a deficient number, since it is larger than the sum of its proper divisors (1).

88431457 is an equidigital number, since it uses as much as digits as its factorization.

88431457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107520, while the sum is 40.

The square root of 88431457 is about 9403.8001361152. The cubic root of 88431457 is about 445.5217664726.

It can be divided in two parts, 88431 and 457, that added together give a palindrome (88888).

The spelling of 88431457 in words is "eighty-eight million, four hundred thirty-one thousand, four hundred fifty-seven".