10921955 has 16 divisors (see below), whose sum is σ = 14364000. Its totient is φ = 7906560.

The previous prime is 10921931. The next prime is 10921961. The reversal of 10921955 is 55912901.

10921955 = 259² + 260² + ... + 368².

It is not a de Polignac number, because 10921955 - 2⁶ = 10921891 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18911 + ... + 19479.

It is an arithmetic number, because the mean of its divisors is an integer number (897750).

Almost surely, 2^10921955 is an apocalyptic number.

10921955 is a deficient number, since it is larger than the sum of its proper divisors (3442045).

10921955 is a wasteful number, since it uses less digits than its factorization.

10921955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934.

The product of its (nonzero) digits is 4050, while the sum is 32.

The square root of 10921955 is about 3304.8381200900. The cubic root of 10921955 is about 221.8707889170.

The spelling of 10921955 in words is "ten million, nine hundred twenty-one thousand, nine hundred fifty-five".