90278951 has 16 divisors (see below), whose sum is σ = 105019200. Its totient is φ = 76012800.

The previous prime is 90278941. The next prime is 90278953. The reversal of 90278951 is 15987209.

It is a cyclic number.

It is not a de Polignac number, because 90278951 - 2¹⁰ = 90277927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90278899 and 90278908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90278953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104915 + ... + 105771.

It is an arithmetic number, because the mean of its divisors is an integer number (6563700).

Almost surely, 2^90278951 is an apocalyptic number.

90278951 is a deficient number, since it is larger than the sum of its proper divisors (14740249).

90278951 is a wasteful number, since it uses less digits than its factorization.

90278951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 90278951 is about 9501.5236146631. The cubic root of 90278951 is about 448.6029942926.

The spelling of 90278951 in words is "ninety million, two hundred seventy-eight thousand, nine hundred fifty-one".