51513541 has 8 divisors (see below), whose sum is σ = 56095200. Its totient is φ = 47118960.

The previous prime is 51513533. The next prime is 51513559. The reversal of 51513541 is 14531515.

It is a happy number.

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 51513541 - 2³ = 51513533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51513571) 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, 46195 + ... + 47296.

It is an arithmetic number, because the mean of its divisors is an integer number (7011900).

Almost surely, 2^51513541 is an apocalyptic number.

It is an amenable number.

51513541 is a deficient number, since it is larger than the sum of its proper divisors (4581659).

51513541 is a wasteful number, since it uses less digits than its factorization.

51513541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93539.

The product of its digits is 1500, while the sum is 25.

The square root of 51513541 is about 7177.2934313709. The cubic root of 51513541 is about 372.0835482170.

The spelling of 51513541 in words is "fifty-one million, five hundred thirteen thousand, five hundred forty-one".