51013457 has 8 divisors (see below), whose sum is σ = 56058912. Its totient is φ = 46036000.

The previous prime is 51013439. The next prime is 51013493. The reversal of 51013457 is 75431015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51013457 - 2⁶ = 51013393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51013357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15419 + ... + 18432.

It is an arithmetic number, because the mean of its divisors is an integer number (7007364).

Almost surely, 2^51013457 is an apocalyptic number.

It is an amenable number.

51013457 is a deficient number, since it is larger than the sum of its proper divisors (5045455).

51013457 is a wasteful number, since it uses less digits than its factorization.

51013457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33999.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 51013457 is about 7142.3705448541. The cubic root of 51013457 is about 370.8755912735.

It can be divided in two parts, 5101 and 3457, that added together give a palindrome (8558).

The spelling of 51013457 in words is "fifty-one million, thirteen thousand, four hundred fifty-seven".