88117551 has 20 divisors (see below), whose sum is σ = 132948024. Its totient is φ = 58158000.

The previous prime is 88117537. The next prime is 88117591. The reversal of 88117551 is 15571188.

It is a happy number.

It is not a de Polignac number, because 88117551 - 2⁷ = 88117423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88117591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2796 + ... + 13566.

Almost surely, 2^88117551 is an apocalyptic number.

88117551 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

88117551 is a deficient number, since it is larger than the sum of its proper divisors (44830473).

88117551 is a wasteful number, since it uses less digits than its factorization.

88117551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10884 (or 10875 counting only the distinct ones).

The product of its digits is 11200, while the sum is 36.

The square root of 88117551 is about 9387.0949180244. The cubic root of 88117551 is about 444.9939838433.

The spelling of 88117551 in words is "eighty-eight million, one hundred seventeen thousand, five hundred fifty-one".