51822190 has 32 divisors (see below), whose sum is σ = 108117504. Its totient is φ = 17515680.

The previous prime is 51822167. The next prime is 51822193. The reversal of 51822190 is 9122815.

It is a super-2 number, since 2×51822190² = 5371078752792200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51822193) 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, 244 + ... + 10183.

It is an arithmetic number, because the mean of its divisors is an integer number (3378672).

Almost surely, 2^51822190 is an apocalyptic number.

51822190 is an abundant number, since it is smaller than the sum of its proper divisors (56295314).

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

51822190 is a wasteful number, since it uses less digits than its factorization.

51822190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10512.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 51822190 is about 7198.7630881979. The cubic root of 51822190 is about 372.8251953521.

The spelling of 51822190 in words is "fifty-one million, eight hundred twenty-two thousand, one hundred ninety".