51330461 has 16 divisors (see below), whose sum is σ = 64049664. Its totient is φ = 40051584.

The previous prime is 51330443. The next prime is 51330467. The reversal of 51330461 is 16403315.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 51330461 - 2¹⁸ = 51068317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51330467) 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, 2780 + ... + 10506.

It is an arithmetic number, because the mean of its divisors is an integer number (4003104).

Almost surely, 2^51330461 is an apocalyptic number.

It is an amenable number.

51330461 is a deficient number, since it is larger than the sum of its proper divisors (12719203).

51330461 is a wasteful number, since it uses less digits than its factorization.

51330461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7820.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 51330461 is about 7164.5279677031. The cubic root of 51330461 is about 371.6422278992.

Adding to 51330461 its reverse (16403315), we get a palindrome (67733776).

The spelling of 51330461 in words is "fifty-one million, three hundred thirty thousand, four hundred sixty-one".