11451965 has 32 divisors (see below), whose sum is σ = 17521920. Its totient is φ = 6994944.

The previous prime is 11451961. The next prime is 11451977. The reversal of 11451965 is 56915411.

It is a cyclic number.

It is not a de Polignac number, because 11451965 - 2² = 11451961 is a prime.

It is a super-2 number, since 2×11451965² = 262295004722450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11451961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10799 + ... + 11811.

It is an arithmetic number, because the mean of its divisors is an integer number (547560).

Almost surely, 2^11451965 is an apocalyptic number.

It is an amenable number.

11451965 is a deficient number, since it is larger than the sum of its proper divisors (6069955).

11451965 is a wasteful number, since it uses less digits than its factorization.

11451965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061.

The product of its digits is 5400, while the sum is 32.

The square root of 11451965 is about 3384.0752060201. The cubic root of 11451965 is about 225.4031619442.

The spelling of 11451965 in words is "eleven million, four hundred fifty-one thousand, nine hundred sixty-five".