51125451 has 16 divisors (see below), whose sum is σ = 73946880. Its totient is φ = 31232160.

The previous prime is 51125419. The next prime is 51125461. The reversal of 51125451 is 15452115.

It is not a de Polignac number, because 51125451 - 2⁵ = 51125419 is a prime.

It is a super-2 number, since 2×51125451² = 5227623479906802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51125461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 706 + ... + 10136.

It is an arithmetic number, because the mean of its divisors is an integer number (4621680).

Almost surely, 2^51125451 is an apocalyptic number.

51125451 is a deficient number, since it is larger than the sum of its proper divisors (22821429).

51125451 is a wasteful number, since it uses less digits than its factorization.

51125451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9586.

The product of its digits is 1000, while the sum is 24.

The square root of 51125451 is about 7150.2063606584. The cubic root of 51125451 is about 371.1467973745.

Adding to 51125451 its reverse (15452115), we get a palindrome (66577566).

The spelling of 51125451 in words is "fifty-one million, one hundred twenty-five thousand, four hundred fifty-one".