51060906 has 48 divisors (see below), whose sum is σ = 123002880. Its totient is φ = 15202080.

The previous prime is 51060887. The next prime is 51060931. The reversal of 51060906 is 60906015.

51060906 is a `hidden beast` number, since 51 + 0 + 609 + 0 + 6 = 666.

It is a super-2 number, since 2×51060906² = 5214432243081672, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51060906.

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, 3735 + ... + 10773.

It is an arithmetic number, because the mean of its divisors is an integer number (2562560).

Almost surely, 2^51060906 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51060906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61501440).

51060906 is an abundant number, since it is smaller than the sum of its proper divisors (71941974).

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

51060906 is a wasteful number, since it uses less digits than its factorization.

51060906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7091 (or 7088 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 51060906 is about 7145.6914291061. The cubic root of 51060906 is about 370.9905427900.

It can be divided in two parts, 510 and 60906, that added together give a palindrome (61416).

The spelling of 51060906 in words is "fifty-one million, sixty thousand, nine hundred six".