51442570 has 16 divisors (see below), whose sum is σ = 93713760. Its totient is φ = 20328784.

The previous prime is 51442511. The next prime is 51442579. The reversal of 51442570 is 7524415.

It is not an unprimeable number, because it can be changed into a prime (51442579) 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, 30160 + ... + 31819.

It is an arithmetic number, because the mean of its divisors is an integer number (5857110).

Almost surely, 2^51442570 is an apocalyptic number.

51442570 is a deficient number, since it is larger than the sum of its proper divisors (42271190).

51442570 is a wasteful number, since it uses less digits than its factorization.

51442570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62069.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 51442570 is about 7172.3475933616. The cubic root of 51442570 is about 371.9125946033.

Adding to 51442570 its reverse (7524415), we get a palindrome (58966985).

The spelling of 51442570 in words is "fifty-one million, four hundred forty-two thousand, five hundred seventy".