51577428 has 96 divisors (see below), whose sum is σ = 147087360. Its totient is φ = 13749120.

The previous prime is 51577423. The next prime is 51577429. The reversal of 51577428 is 82477515.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51577423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75175 + ... + 75857.

It is an arithmetic number, because the mean of its divisors is an integer number (1532160).

Almost surely, 2^51577428 is an apocalyptic number.

51577428 is a gapful number since it is divisible by the number (58) 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 51577428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73543680).

51577428 is an abundant number, since it is smaller than the sum of its proper divisors (95509932).

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

51577428 is a wasteful number, since it uses less digits than its factorization.

51577428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757 (or 755 counting only the distinct ones).

The product of its digits is 78400, while the sum is 39.

The square root of 51577428 is about 7181.7426854490. The cubic root of 51577428 is about 372.2373037857.

The spelling of 51577428 in words is "fifty-one million, five hundred seventy-seven thousand, four hundred twenty-eight".