88400551 has 4 divisors (see below), whose sum is σ = 90556704. Its totient is φ = 86244400.

The previous prime is 88400539. The next prime is 88400567. The reversal of 88400551 is 15500488.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 88400551 - 2⁷ = 88400423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88400531) 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 in 3 ways as a sum of consecutive naturals, for example, 1078015 + ... + 1078096.

It is an arithmetic number, because the mean of its divisors is an integer number (22639176).

Almost surely, 2^88400551 is an apocalyptic number.

88400551 is a deficient number, since it is larger than the sum of its proper divisors (2156153).

88400551 is a wasteful number, since it uses less digits than its factorization.

88400551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2156152.

The product of its (nonzero) digits is 6400, while the sum is 31.

The square root of 88400551 is about 9402.1567206679. The cubic root of 88400551 is about 445.4698584730.

The spelling of 88400551 in words is "eighty-eight million, four hundred thousand, five hundred fifty-one".