51479494 has 8 divisors (see below), whose sum is σ = 84239208. Its totient is φ = 23399760.

The previous prime is 51479453. The next prime is 51479513. The reversal of 51479494 is 49497415.

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

It is a super-3 number, since 3×51479494³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51479494.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1169967 + ... + 1170010.

It is an arithmetic number, because the mean of its divisors is an integer number (10529901).

Almost surely, 2^51479494 is an apocalyptic number.

51479494 is a deficient number, since it is larger than the sum of its proper divisors (32759714).

51479494 is a wasteful number, since it uses less digits than its factorization.

51479494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2339990.

The product of its digits is 181440, while the sum is 43.

The square root of 51479494 is about 7174.9211842361. The cubic root of 51479494 is about 372.0015560501.

It can be divided in two parts, 5147 and 9494, that added together give a palindrome (14641).

The spelling of 51479494 in words is "fifty-one million, four hundred seventy-nine thousand, four hundred ninety-four".