51890125 has 32 divisors (see below), whose sum is σ = 76437504. Its totient is φ = 34416000.

The previous prime is 51890107. The next prime is 51890129. The reversal of 51890125 is 52109815.

It is not a de Polignac number, because 51890125 - 2¹¹ = 51888077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51890129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26169 + ... + 28081.

It is an arithmetic number, because the mean of its divisors is an integer number (2388672).

Almost surely, 2^51890125 is an apocalyptic number.

It is an amenable number.

51890125 is a deficient number, since it is larger than the sum of its proper divisors (24547379).

51890125 is a wasteful number, since it uses less digits than its factorization.

51890125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1966 (or 1956 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 31.

The square root of 51890125 is about 7203.4800617479. The cubic root of 51890125 is about 372.9880394931.

The spelling of 51890125 in words is "fifty-one million, eight hundred ninety thousand, one hundred twenty-five".