90799551 has 12 divisors (see below), whose sum is σ = 135677880. Its totient is φ = 58445520.

The previous prime is 90799549. The next prime is 90799559. The reversal of 90799551 is 15599709.

90799551 is a `hidden beast` number, since 9 + 0 + 7 + 99 + 551 = 666.

It is not a de Polignac number, because 90799551 - 2¹ = 90799549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90799497 and 90799506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90799559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 173685 + ... + 174206.

It is an arithmetic number, because the mean of its divisors is an integer number (11306490).

Almost surely, 2^90799551 is an apocalyptic number.

90799551 is a deficient number, since it is larger than the sum of its proper divisors (44878329).

90799551 is a wasteful number, since it uses less digits than its factorization.

90799551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347926 (or 347923 counting only the distinct ones).

The product of its (nonzero) digits is 127575, while the sum is 45.

The square root of 90799551 is about 9528.8798397293. The cubic root of 90799551 is about 449.4636424479.

The spelling of 90799551 in words is "ninety million, seven hundred ninety-nine thousand, five hundred fifty-one".