88578781 has 2 divisors, whose sum is σ = 88578782. Its totient is φ = 88578780.

The previous prime is 88578769. The next prime is 88578793. The reversal of 88578781 is 18787588.

It is a balanced prime because it is at equal distance from previous prime (88578769) and next prime (88578793).

It can be written as a sum of positive squares in only one way, i.e., 56475225 + 32103556 = 7515^2 + 5666^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88578781 is a prime.

It is a super-2 number, since 2×88578781² = 15692400886891922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88576781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44289390 + 44289391.

It is an arithmetic number, because the mean of its divisors is an integer number (44289391).

Almost surely, 2^88578781 is an apocalyptic number.

It is an amenable number.

88578781 is a deficient number, since it is larger than the sum of its proper divisors (1).

88578781 is an equidigital number, since it uses as much as digits as its factorization.

88578781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1003520, while the sum is 52.

The square root of 88578781 is about 9411.6300926035. The cubic root of 88578781 is about 445.7690375812.

The spelling of 88578781 in words is "eighty-eight million, five hundred seventy-eight thousand, seven hundred eighty-one".