51120472 has 24 divisors (see below), whose sum is σ = 103793940. Its totient is φ = 23593440.

The previous prime is 51120463. The next prime is 51120527. The reversal of 51120472 is 27402115.

It is a happy number.

It is a super-2 number, since 2×51120472² = 5226605315005568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17554 + ... + 20257.

Almost surely, 2^51120472 is an apocalyptic number.

51120472 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51120472 is an abundant number, since it is smaller than the sum of its proper divisors (52673468).

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

51120472 is a wasteful number, since it uses less digits than its factorization.

51120472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37843 (or 37826 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 51120472 is about 7149.8581804117. The cubic root of 51120472 is about 371.1347485817.

Adding to 51120472 its reverse (27402115), we get a palindrome (78522587).

The spelling of 51120472 in words is "fifty-one million, one hundred twenty thousand, four hundred seventy-two".