51774012 has 96 divisors (see below), whose sum is σ = 147571200. Its totient is φ = 15624576.

The previous prime is 51774011. The next prime is 51774017. The reversal of 51774012 is 21047715.

It is a super-2 number, since 2×51774012² = 5361096637152288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51774011) 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, 46648 + ... + 47744.

It is an arithmetic number, because the mean of its divisors is an integer number (1537200).

Almost surely, 2^51774012 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 51774012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73785600).

51774012 is an abundant number, since it is smaller than the sum of its proper divisors (95797188).

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

51774012 is a wasteful number, since it uses less digits than its factorization.

51774012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152 (or 1144 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 51774012 is about 7195.4160407860. The cubic root of 51774012 is about 372.7096236158.

It can be divided in two parts, 517 and 74012, that added together give a square (74529 = 273²).

The spelling of 51774012 in words is "fifty-one million, seven hundred seventy-four thousand, twelve".