51677513 has 4 divisors (see below), whose sum is σ = 51692160. Its totient is φ = 51662868.

The previous prime is 51677459. The next prime is 51677519. The reversal of 51677513 is 31577615.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 51677513 - 2⁸ = 51677257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51677519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1568 + ... + 10286.

It is an arithmetic number, because the mean of its divisors is an integer number (12923040).

Almost surely, 2^51677513 is an apocalyptic number.

It is an amenable number.

51677513 is a deficient number, since it is larger than the sum of its proper divisors (14647).

51677513 is an equidigital number, since it uses as much as digits as its factorization.

51677513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14646.

The product of its digits is 22050, while the sum is 35.

The square root of 51677513 is about 7188.7073246864. The cubic root of 51677513 is about 372.4779213075.

The spelling of 51677513 in words is "fifty-one million, six hundred seventy-seven thousand, five hundred thirteen".