51066461 has 4 divisors (see below), whose sum is σ = 51117024. Its totient is φ = 51015900.

The previous prime is 51066451. The next prime is 51066467. The reversal of 51066461 is 16466015.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51066461 - 2⁶ = 51066397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51066467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23735 + ... + 25796.

It is an arithmetic number, because the mean of its divisors is an integer number (12779256).

Almost surely, 2^51066461 is an apocalyptic number.

It is an amenable number.

51066461 is a deficient number, since it is larger than the sum of its proper divisors (50563).

51066461 is a wasteful number, since it uses less digits than its factorization.

51066461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50562.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 51066461 is about 7146.0801143004. The cubic root of 51066461 is about 371.0039958593.

The spelling of 51066461 in words is "fifty-one million, sixty-six thousand, four hundred sixty-one".