89616551 has 2 divisors, whose sum is σ = 89616552. Its totient is φ = 89616550.

The previous prime is 89616547. The next prime is 89616577. The reversal of 89616551 is 15561698.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89616551 - 2² = 89616547 is a prime.

It is a super-2 number, since 2×89616551² = 16062252426271202, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 89616499 and 89616508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89616581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44808275 + 44808276.

It is an arithmetic number, because the mean of its divisors is an integer number (44808276).

Almost surely, 2^89616551 is an apocalyptic number.

89616551 is a deficient number, since it is larger than the sum of its proper divisors (1).

89616551 is an equidigital number, since it uses as much as digits as its factorization.

89616551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 41.

The square root of 89616551 is about 9466.6018718440. The cubic root of 89616551 is about 447.5031278456.

The spelling of 89616551 in words is "eighty-nine million, six hundred sixteen thousand, five hundred fifty-one".