51771374 has 4 divisors (see below), whose sum is σ = 77657064. Its totient is φ = 25885686.

The previous prime is 51771373. The next prime is 51771427. The reversal of 51771374 is 47317715.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51771373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12942842 + ... + 12942845.

It is an arithmetic number, because the mean of its divisors is an integer number (19414266).

Almost surely, 2^51771374 is an apocalyptic number.

51771374 is a deficient number, since it is larger than the sum of its proper divisors (25885690).

51771374 is a wasteful number, since it uses less digits than its factorization.

51771374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25885689.

The product of its digits is 20580, while the sum is 35.

The square root of 51771374 is about 7195.2327272994. The cubic root of 51771374 is about 372.7032933828.

The spelling of 51771374 in words is "fifty-one million, seven hundred seventy-one thousand, three hundred seventy-four".