51771407 has 8 divisors (see below), whose sum is σ = 53105760. Its totient is φ = 50450400.

The previous prime is 51771373. The next prime is 51771427. The reversal of 51771407 is 70417715.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51771407 - 2²⁴ = 34994191 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 (51771427) 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, 4769 + ... + 11237.

It is an arithmetic number, because the mean of its divisors is an integer number (6638220).

Almost surely, 2^51771407 is an apocalyptic number.

51771407 is a deficient number, since it is larger than the sum of its proper divisors (1334353).

51771407 is a wasteful number, since it uses less digits than its factorization.

51771407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6673.

The product of its (nonzero) digits is 6860, while the sum is 32.

The square root of 51771407 is about 7195.2350204840. The cubic root of 51771407 is about 372.7033725720.

The spelling of 51771407 in words is "fifty-one million, seven hundred seventy-one thousand, four hundred seven".