51157425 has 48 divisors (see below), whose sum is σ = 93922560. Its totient is φ = 24360000.

The previous prime is 51157411. The next prime is 51157427. The reversal of 51157425 is 52475115.

It is not a de Polignac number, because 51157425 - 2¹³ = 51149233 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51157392 and 51157401.

It is not an unprimeable number, because it can be changed into a prime (51157427) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48150 + ... + 49200.

It is an arithmetic number, because the mean of its divisors is an integer number (1956720).

Almost surely, 2^51157425 is an apocalyptic number.

51157425 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51157425 is a deficient number, since it is larger than the sum of its proper divisors (42765135).

51157425 is a wasteful number, since it uses less digits than its factorization.

51157425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134 (or 1129 counting only the distinct ones).

The product of its digits is 7000, while the sum is 30.

The square root of 51157425 is about 7152.4418907112. The cubic root of 51157425 is about 371.2241533321.

The spelling of 51157425 in words is "fifty-one million, one hundred fifty-seven thousand, four hundred twenty-five".