51351244 has 24 divisors (see below), whose sum is σ = 103305888. Its totient is φ = 21878400.

The previous prime is 51351241. The next prime is 51351253. The reversal of 51351244 is 44215315.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51351241) 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, 457 + ... + 10144.

It is an arithmetic number, because the mean of its divisors is an integer number (4304412).

Almost surely, 2^51351244 is an apocalyptic number.

It is an amenable number.

51351244 is an abundant number, since it is smaller than the sum of its proper divisors (51954644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51351244 is a wasteful number, since it uses less digits than its factorization.

51351244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10785 (or 10783 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 51351244 is about 7165.9782305000. The cubic root of 51351244 is about 371.6923787459.

Adding to 51351244 its reverse (44215315), we get a palindrome (95566559).

The spelling of 51351244 in words is "fifty-one million, three hundred fifty-one thousand, two hundred forty-four".