51594779 has 4 divisors (see below), whose sum is σ = 54629784. Its totient is φ = 48559776.

The previous prime is 51594749. The next prime is 51594839. The reversal of 51594779 is 97749515.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51594779 - 2¹² = 51590683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51594749) 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, 1517477 + ... + 1517510.

It is an arithmetic number, because the mean of its divisors is an integer number (13657446).

Almost surely, 2^51594779 is an apocalyptic number.

51594779 is a deficient number, since it is larger than the sum of its proper divisors (3035005).

51594779 is a wasteful number, since it uses less digits than its factorization.

51594779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3035004.

The product of its digits is 396900, while the sum is 47.

The square root of 51594779 is about 7182.9505775830. The cubic root of 51594779 is about 372.2790401653.

The spelling of 51594779 in words is "fifty-one million, five hundred ninety-four thousand, seven hundred seventy-nine".