51630783 has 16 divisors (see below), whose sum is σ = 70073856. Its totient is φ = 33808320.

The previous prime is 51630773. The next prime is 51630797. The reversal of 51630783 is 38703615.

It is a happy number.

It is not a de Polignac number, because 51630783 - 2¹⁰ = 51629759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51630713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94116 + ... + 94662.

It is an arithmetic number, because the mean of its divisors is an integer number (4379616).

Almost surely, 2^51630783 is an apocalyptic number.

51630783 is a deficient number, since it is larger than the sum of its proper divisors (18443073).

51630783 is a wasteful number, since it uses less digits than its factorization.

51630783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 51630783 is about 7185.4563529396. The cubic root of 51630783 is about 372.3656149329.

The spelling of 51630783 in words is "fifty-one million, six hundred thirty thousand, seven hundred eighty-three".