51873745 has 32 divisors (see below), whose sum is σ = 78806016. Its totient is φ = 31838400.

The previous prime is 51873737. The next prime is 51873751. The reversal of 51873745 is 54737815.

It is not a de Polignac number, because 51873745 - 2³ = 51873737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51873698 and 51873707.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24790 + ... + 26800.

It is an arithmetic number, because the mean of its divisors is an integer number (2462688).

Almost surely, 2^51873745 is an apocalyptic number.

51873745 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51873745 is a deficient number, since it is larger than the sum of its proper divisors (26932271).

51873745 is a wasteful number, since it uses less digits than its factorization.

51873745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101.

The product of its digits is 117600, while the sum is 40.

The square root of 51873745 is about 7202.3430215451. The cubic root of 51873745 is about 372.9487886912.

The spelling of 51873745 in words is "fifty-one million, eight hundred seventy-three thousand, seven hundred forty-five".