51122610 has 128 divisors (see below), whose sum is σ = 170035200. Its totient is φ = 10618560.

The previous prime is 51122593. The next prime is 51122633. The reversal of 51122610 is 1622115.

51122610 is a `hidden beast` number, since 51 + 1 + 2 + 2 + 610 = 666.

It is a super-2 number, since 2×51122610² = 5227042506424200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 19561 + ... + 22019.

It is an arithmetic number, because the mean of its divisors is an integer number (1328400).

Almost surely, 2^51122610 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51122610, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85017600).

51122610 is an abundant number, since it is smaller than the sum of its proper divisors (118912590).

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

51122610 is a wasteful number, since it uses less digits than its factorization.

51122610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2493 (or 2487 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 51122610 is about 7150.0076923036. The cubic root of 51122610 is about 371.1399224713.

Adding to 51122610 its reverse (1622115), we get a palindrome (52744725).

The spelling of 51122610 in words is "fifty-one million, one hundred twenty-two thousand, six hundred ten".