51773898 has 96 divisors (see below), whose sum is σ = 124431552. Its totient is φ = 14227200.

The previous prime is 51773893. The next prime is 51773899. The reversal of 51773898 is 89837715.

It is a super-2 number, since 2×51773898² = 5361073028228808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51773893) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 976840 + ... + 976892.

It is an arithmetic number, because the mean of its divisors is an integer number (1296162).

Almost surely, 2^51773898 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51773898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62215776).

51773898 is an abundant number, since it is smaller than the sum of its proper divisors (72657654).

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

51773898 is a wasteful number, since it uses less digits than its factorization.

51773898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 129 counting only the distinct ones).

The product of its digits is 423360, while the sum is 48.

The square root of 51773898 is about 7195.4081190715. The cubic root of 51773898 is about 372.7093500621.

The spelling of 51773898 in words is "fifty-one million, seven hundred seventy-three thousand, eight hundred ninety-eight".