90959551 has 2 divisors, whose sum is σ = 90959552. Its totient is φ = 90959550.

The previous prime is 90959527. The next prime is 90959597. The reversal of 90959551 is 15595909.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90959551 - 2⁹ = 90959039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90959498 and 90959507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90959851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45479775 + 45479776.

It is an arithmetic number, because the mean of its divisors is an integer number (45479776).

Almost surely, 2^90959551 is an apocalyptic number.

90959551 is a deficient number, since it is larger than the sum of its proper divisors (1).

90959551 is an equidigital number, since it uses as much as digits as its factorization.

90959551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91125, while the sum is 43.

The square root of 90959551 is about 9537.2716748554. The cubic root of 90959551 is about 449.7274909756.

The spelling of 90959551 in words is "ninety million, nine hundred fifty-nine thousand, five hundred fifty-one".