51498144 has 36 divisors (see below), whose sum is σ = 146448666. Its totient is φ = 17165952.

The previous prime is 51498131. The next prime is 51498193. The reversal of 51498144 is 44189415.

It can be written as a sum of positive squares in only one way, i.e., 29030544 + 22467600 = 5388^2 + 4740^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 51498099 and 51498108.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 89119 + ... + 89694.

Almost surely, 2^51498144 is an apocalyptic number.

It is an amenable number.

51498144 is an abundant number, since it is smaller than the sum of its proper divisors (94950522).

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

51498144 is a wasteful number, since it uses less digits than its factorization.

51498144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178829 (or 178818 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 51498144 is about 7176.2207323911. The cubic root of 51498144 is about 372.0464735556.

The spelling of 51498144 in words is "fifty-one million, four hundred ninety-eight thousand, one hundred forty-four".