51572022 has 16 divisors (see below), whose sum is σ = 103308480. Its totient is φ = 17163272.

The previous prime is 51571963. The next prime is 51572041. The reversal of 51572022 is 22027515.

It is a junction number, because it is equal to n+sod(n) for n = 51571983 and 51572001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2568 + ... + 10475.

It is an arithmetic number, because the mean of its divisors is an integer number (6456780).

Almost surely, 2^51572022 is an apocalyptic number.

51572022 is an abundant number, since it is smaller than the sum of its proper divisors (51736458).

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

51572022 is a wasteful number, since it uses less digits than its factorization.

51572022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13707.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 51572022 is about 7181.3663045412. The cubic root of 51572022 is about 372.2242981923.

Adding to 51572022 its reverse (22027515), we get a palindrome (73599537).

The spelling of 51572022 in words is "fifty-one million, five hundred seventy-two thousand, twenty-two".