51813332 has 6 divisors (see below), whose sum is σ = 90673338. Its totient is φ = 25906664.

The previous prime is 51813301. The next prime is 51813337. The reversal of 51813332 is 23331815.

It can be written as a sum of positive squares in only one way, i.e., 51179716 + 633616 = 7154^2 + 796^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51813337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6476663 + ... + 6476670.

It is an arithmetic number, because the mean of its divisors is an integer number (15112223).

Almost surely, 2^51813332 is an apocalyptic number.

It is an amenable number.

51813332 is a deficient number, since it is larger than the sum of its proper divisors (38860006).

51813332 is a wasteful number, since it uses less digits than its factorization.

51813332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12953337 (or 12953335 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

The square root of 51813332 is about 7198.1478173208. The cubic root of 51813332 is about 372.8039517255.

The spelling of 51813332 in words is "fifty-one million, eight hundred thirteen thousand, three hundred thirty-two".