51077242 has 8 divisors (see below), whose sum is σ = 78686676. Its totient is φ = 24848352.

The previous prime is 51077239. The next prime is 51077251. The reversal of 51077242 is 24277015.

It can be written as a sum of positive squares in 2 ways, for example, as 48149721 + 2927521 = 6939^2 + 1711^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 51077242.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345043 + ... + 345190.

Almost surely, 2^51077242 is an apocalyptic number.

51077242 is a deficient number, since it is larger than the sum of its proper divisors (27609434).

51077242 is a wasteful number, since it uses less digits than its factorization.

51077242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690272.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 51077242 is about 7146.8344041261. The cubic root of 51077242 is about 371.0301024438.

The spelling of 51077242 in words is "fifty-one million, seventy-seven thousand, two hundred forty-two".