51162201 has 12 divisors (see below), whose sum is σ = 73988928. Its totient is φ = 34067544.

The previous prime is 51162187. The next prime is 51162211. The reversal of 51162201 is 10226115.

It is not a de Polignac number, because 51162201 - 2⁵ = 51162169 is a prime.

It is a super-2 number, since 2×51162201² = 5235141622328802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51162211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5956 + ... + 11738.

It is an arithmetic number, because the mean of its divisors is an integer number (6165744).

Almost surely, 2^51162201 is an apocalyptic number.

It is an amenable number.

51162201 is a deficient number, since it is larger than the sum of its proper divisors (22826727).

51162201 is a wasteful number, since it uses less digits than its factorization.

51162201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6772 (or 6769 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 51162201 is about 7152.7757549080. The cubic root of 51162201 is about 371.2357053300.

Adding to 51162201 its reverse (10226115), we get a palindrome (61388316).

The spelling of 51162201 in words is "fifty-one million, one hundred sixty-two thousand, two hundred one".