51202442 has 16 divisors (see below), whose sum is σ = 78343200. Its totient is φ = 25090800.

The previous prime is 51202387. The next prime is 51202471. The reversal of 51202442 is 24420215.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 72692 + ... + 73392.

It is an arithmetic number, because the mean of its divisors is an integer number (4896450).

Almost surely, 2^51202442 is an apocalyptic number.

51202442 is a deficient number, since it is larger than the sum of its proper divisors (27140758).

51202442 is a wasteful number, since it uses less digits than its factorization.

51202442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 51202442 is about 7155.5881659022. The cubic root of 51202442 is about 371.3330101160. Note that the first 3 decimals are identical.

Adding to 51202442 its reverse (24420215), we get a palindrome (75622657).

The spelling of 51202442 in words is "fifty-one million, two hundred two thousand, four hundred forty-two".