90473251 has 8 divisors (see below), whose sum is σ = 101366064. Its totient is φ = 80025120.

The previous prime is 90473209. The next prime is 90473263. The reversal of 90473251 is 15237409.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90473251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90473281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110740 + ... + 111553.

It is an arithmetic number, because the mean of its divisors is an integer number (12670758).

Almost surely, 2^90473251 is an apocalyptic number.

90473251 is a deficient number, since it is larger than the sum of its proper divisors (10892813).

90473251 is a wasteful number, since it uses less digits than its factorization.

90473251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222341.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 90473251 is about 9511.7427950928. The cubic root of 90473251 is about 448.9245941924.

The spelling of 90473251 in words is "ninety million, four hundred seventy-three thousand, two hundred fifty-one".