51120850 has 48 divisors (see below), whose sum is σ = 106305696. Its totient is φ = 18128000.

The previous prime is 51120841. The next prime is 51120863. The reversal of 51120850 is 5802115.

It is a super-2 number, since 2×51120850² = 5226682609445000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 21417 + ... + 23683.

It is an arithmetic number, because the mean of its divisors is an integer number (2214702).

Almost surely, 2^51120850 is an apocalyptic number.

51120850 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51120850 is an abundant number, since it is smaller than the sum of its proper divisors (55184846).

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

51120850 is a wasteful number, since it uses less digits than its factorization.

51120850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2331 (or 2326 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 51120850 is about 7149.8846144536. The cubic root of 51120850 is about 371.1356633398.

Adding to 51120850 its reverse (5802115), we get a palindrome (56922965).

The spelling of 51120850 in words is "fifty-one million, one hundred twenty thousand, eight hundred fifty".