88628557 has 2 divisors, whose sum is σ = 88628558. Its totient is φ = 88628556.

The previous prime is 88628509. The next prime is 88628563. The reversal of 88628557 is 75582688.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50324836 + 38303721 = 7094^2 + 6189^2 .

It is a cyclic number.

It is not a de Polignac number, because 88628557 - 2¹¹ = 88626509 is a prime.

It is a super-2 number, since 2×88628557² = 15710042231804498, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 88628557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88628567) 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, 44314278 + 44314279.

It is an arithmetic number, because the mean of its divisors is an integer number (44314279).

Almost surely, 2^88628557 is an apocalyptic number.

It is an amenable number.

88628557 is a deficient number, since it is larger than the sum of its proper divisors (1).

88628557 is an equidigital number, since it uses as much as digits as its factorization.

88628557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1075200, while the sum is 49.

The square root of 88628557 is about 9414.2741090325. The cubic root of 88628557 is about 445.8525204968.

The spelling of 88628557 in words is "eighty-eight million, six hundred twenty-eight thousand, five hundred fifty-seven".