51773904 has 200 divisors, whose sum is σ = 184849280. Its totient is φ = 13623552.

The previous prime is 51773899. The next prime is 51773921. The reversal of 51773904 is 40937715.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 117717 + ... + 118155.

Almost surely, 2^51773904 is an apocalyptic number.

51773904 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51773904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92424640).

51773904 is an abundant number, since it is smaller than the sum of its proper divisors (133075376).

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

51773904 is a wasteful number, since it uses less digits than its factorization.

51773904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479 (or 464 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 51773904 is about 7195.4085360041. The cubic root of 51773904 is about 372.7093644596.

The spelling of 51773904 in words is "fifty-one million, seven hundred seventy-three thousand, nine hundred four".