51245150 has 48 divisors (see below), whose sum is σ = 108528768. Its totient is φ = 17820000.

The previous prime is 51245149. The next prime is 51245209. The reversal of 51245150 is 5154215.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10625 + ... + 14675.

It is an arithmetic number, because the mean of its divisors is an integer number (2261016).

Almost surely, 2^51245150 is an apocalyptic number.

51245150 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51245150 is an abundant number, since it is smaller than the sum of its proper divisors (57283618).

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

51245150 is a wasteful number, since it uses less digits than its factorization.

51245150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4097 (or 4092 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 51245150 is about 7158.5717849303. The cubic root of 51245150 is about 371.4362244831.

Adding to 51245150 its reverse (5154215), we get a palindrome (56399365).

The spelling of 51245150 in words is "fifty-one million, two hundred forty-five thousand, one hundred fifty".