51542513 has 8 divisors (see below), whose sum is σ = 56544480. Its totient is φ = 46593280.

The previous prime is 51542479. The next prime is 51542531. The reversal of 51542513 is 31524515.

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 51542513 - 2¹⁰ = 51541489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51502513) 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, 11120 + ... + 15057.

It is an arithmetic number, because the mean of its divisors is an integer number (7068060).

Almost surely, 2^51542513 is an apocalyptic number.

It is an amenable number.

51542513 is a deficient number, since it is larger than the sum of its proper divisors (5001967).

51542513 is a wasteful number, since it uses less digits than its factorization.

51542513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26367.

The product of its digits is 3000, while the sum is 26.

The square root of 51542513 is about 7179.3114572360. The cubic root of 51542513 is about 372.1532902954.

It can be divided in two parts, 5154 and 2513, that added together give a palindrome (7667).

The spelling of 51542513 in words is "fifty-one million, five hundred forty-two thousand, five hundred thirteen".