51394264 has 64 divisors (see below), whose sum is σ = 107503200. Its totient is φ = 22923264.

The previous prime is 51394261. The next prime is 51394267. The reversal of 51394264 is 46249315.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51394261) and next prime (51394267).

It is a Harshad number since it is a multiple of its sum of digits (34).

Its product of digits (25920) is a multiple of the sum of its prime divisors (288).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51394261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 327274 + ... + 327430.

Almost surely, 2^51394264 is an apocalyptic number.

It is an amenable number.

51394264 is an abundant number, since it is smaller than the sum of its proper divisors (56108936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51394264 is a wasteful number, since it uses less digits than its factorization.

51394264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292 (or 288 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 51394264 is about 7168.9792857840. The cubic root of 51394264 is about 371.7961460658.

The spelling of 51394264 in words is "fifty-one million, three hundred ninety-four thousand, two hundred sixty-four".