51554825 has 24 divisors (see below), whose sum is σ = 74167872. Its totient is φ = 34816320.

The previous prime is 51554813. The next prime is 51554879. The reversal of 51554825 is 52845515.

It is not a de Polignac number, because 51554825 - 2¹⁶ = 51489289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9527 + ... + 13923.

It is an arithmetic number, because the mean of its divisors is an integer number (3090328).

Almost surely, 2^51554825 is an apocalyptic number.

It is an amenable number.

51554825 is a deficient number, since it is larger than the sum of its proper divisors (22613047).

51554825 is a wasteful number, since it uses less digits than its factorization.

51554825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4481 (or 4476 counting only the distinct ones).

The product of its digits is 40000, while the sum is 35.

The square root of 51554825 is about 7180.1688698804. The cubic root of 51554825 is about 372.1829201179.

The spelling of 51554825 in words is "fifty-one million, five hundred fifty-four thousand, eight hundred twenty-five".