51248457 has 24 divisors (see below), whose sum is σ = 82677504. Its totient is φ = 31535568.

The previous prime is 51248383. The next prime is 51248497. The reversal of 51248457 is 75484215.

It is not a de Polignac number, because 51248457 - 2¹⁴ = 51232073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51248497) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4953 + ... + 11270.

It is an arithmetic number, because the mean of its divisors is an integer number (3444896).

Almost surely, 2^51248457 is an apocalyptic number.

It is an amenable number.

51248457 is a deficient number, since it is larger than the sum of its proper divisors (31429047).

51248457 is a wasteful number, since it uses less digits than its factorization.

51248457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16251 (or 16239 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 51248457 is about 7158.8027630324. The cubic root of 51248457 is about 371.4442142679. Note that the first 3 decimals are identical.

The spelling of 51248457 in words is "fifty-one million, two hundred forty-eight thousand, four hundred fifty-seven".