51664411 has 8 divisors (see below), whose sum is σ = 55319760. Its totient is φ = 48077568.

The previous prime is 51664381. The next prime is 51664433. The reversal of 51664411 is 11446615.

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

It is a cyclic number.

It is not a de Polignac number, because 51664411 - 2¹¹ = 51662363 is a prime.

It is a super-2 number, since 2×51664411² = 5338422727953842, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51664411.

It is not an unprimeable number, because it can be changed into a prime (51664451) 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, 15561 + ... + 18586.

It is an arithmetic number, because the mean of its divisors is an integer number (6914970).

Almost surely, 2^51664411 is an apocalyptic number.

51664411 is a deficient number, since it is larger than the sum of its proper divisors (3655349).

51664411 is a wasteful number, since it uses less digits than its factorization.

51664411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34253.

The product of its digits is 2880, while the sum is 28.

The square root of 51664411 is about 7187.7959765146. The cubic root of 51664411 is about 372.4464400569.

The spelling of 51664411 in words is "fifty-one million, six hundred sixty-four thousand, four hundred eleven".