51745501 has 8 divisors (see below), whose sum is σ = 54921024. Its totient is φ = 48584640.

The previous prime is 51745489. The next prime is 51745517. The reversal of 51745501 is 10554715.

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

It is not a de Polignac number, because 51745501 - 2⁹ = 51744989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51745501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51745571) 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, 4096 + ... + 10966.

It is an arithmetic number, because the mean of its divisors is an integer number (6865128).

Almost surely, 2^51745501 is an apocalyptic number.

It is an amenable number.

51745501 is a deficient number, since it is larger than the sum of its proper divisors (3175523).

51745501 is a wasteful number, since it uses less digits than its factorization.

51745501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7331.

The product of its (nonzero) digits is 3500, while the sum is 28.

The square root of 51745501 is about 7193.4345760561. The cubic root of 51745501 is about 372.6411962663.

The spelling of 51745501 in words is "fifty-one million, seven hundred forty-five thousand, five hundred one".