90253815 has 8 divisors (see below), whose sum is σ = 144406128. Its totient is φ = 48135360.

The previous prime is 90253811. The next prime is 90253837. The reversal of 90253815 is 51835209.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90253815 - 2² = 90253811 is a prime.

It is a super-2 number, since 2×90253815² = 16291502244108450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90253811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3008446 + ... + 3008475.

It is an arithmetic number, because the mean of its divisors is an integer number (18050766).

Almost surely, 2^90253815 is an apocalyptic number.

90253815 is a deficient number, since it is larger than the sum of its proper divisors (54152313).

90253815 is a wasteful number, since it uses less digits than its factorization.

90253815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6016929.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 90253815 is about 9500.2007873518. The cubic root of 90253815 is about 448.5613561942.

The spelling of 90253815 in words is "ninety million, two hundred fifty-three thousand, eight hundred fifteen".