51227748 has 192 divisors, whose sum is σ = 162570240. Its totient is φ = 13737600.

The previous prime is 51227723. The next prime is 51227767. The reversal of 51227748 is 84772215.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 478711 + ... + 478817.

It is an arithmetic number, because the mean of its divisors is an integer number (846720).

Almost surely, 2^51227748 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51227748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81285120).

51227748 is an abundant number, since it is smaller than the sum of its proper divisors (111342492).

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

51227748 is a wasteful number, since it uses less digits than its factorization.

51227748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175 (or 167 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 51227748 is about 7157.3562158104. The cubic root of 51227748 is about 371.3941752031.

The spelling of 51227748 in words is "fifty-one million, two hundred twenty-seven thousand, seven hundred forty-eight".