51117202 has 16 divisors (see below), whose sum is σ = 81292032. Its totient is φ = 24064560.

The previous prime is 51117191. The next prime is 51117203. The reversal of 51117202 is 20271115.

It is a super-2 number, since 2×51117202² = 5225936680617608, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51117202.

It is not an unprimeable number, because it can be changed into a prime (51117203) 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, 8848 + ... + 13435.

It is an arithmetic number, because the mean of its divisors is an integer number (5080752).

Almost surely, 2^51117202 is an apocalyptic number.

51117202 is a deficient number, since it is larger than the sum of its proper divisors (30174830).

51117202 is a wasteful number, since it uses less digits than its factorization.

51117202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22353.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 51117202 is about 7149.6295008902. The cubic root of 51117202 is about 371.1268350104.

Adding to 51117202 its reverse (20271115), we get a palindrome (71388317).

The spelling of 51117202 in words is "fifty-one million, one hundred seventeen thousand, two hundred two".