51102210 has 32 divisors (see below), whose sum is σ = 129101760. Its totient is φ = 12909888.

The previous prime is 51102209. The next prime is 51102211. The reversal of 51102210 is 1220115.

It is an interprime number because it is at equal distance from previous prime (51102209) and next prime (51102211).

It is a super-2 number, since 2×51102210² = 5222871733768200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51102211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44257 + ... + 45396.

It is an arithmetic number, because the mean of its divisors is an integer number (4034430).

Almost surely, 2^51102210 is an apocalyptic number.

51102210 is an abundant number, since it is smaller than the sum of its proper divisors (77999550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51102210 is a wasteful number, since it uses less digits than its factorization.

51102210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89682.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 51102210 is about 7148.5809780683. The cubic root of 51102210 is about 371.0905492636.

Adding to 51102210 its reverse (1220115), we get a palindrome (52322325).

The spelling of 51102210 in words is "fifty-one million, one hundred two thousand, two hundred ten".