51224525 has 12 divisors (see below), whose sum is σ = 69293184. Its totient is φ = 37254000.

The previous prime is 51224507. The next prime is 51224549. The reversal of 51224525 is 52542215.

It is not a de Polignac number, because 51224525 - 2⁶ = 51224461 is a prime.

It is a super-2 number, since 2×51224525² = 5247903922951250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51224494 and 51224503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92861 + ... + 93410.

It is an arithmetic number, because the mean of its divisors is an integer number (5774432).

Almost surely, 2^51224525 is an apocalyptic number.

51224525 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51224525 is a deficient number, since it is larger than the sum of its proper divisors (18068659).

51224525 is a wasteful number, since it uses less digits than its factorization.

51224525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186292 (or 186287 counting only the distinct ones).

The product of its digits is 4000, while the sum is 26.

The square root of 51224525 is about 7157.1310593002. The cubic root of 51224525 is about 371.3863862698.

The spelling of 51224525 in words is "fifty-one million, two hundred twenty-four thousand, five hundred twenty-five".