51029460 has 96 divisors (see below), whose sum is σ = 161844480. Its totient is φ = 13343616.

The previous prime is 51029449. The next prime is 51029467. The reversal of 51029460 is 6492015.

51029460 is a `hidden beast` number, since 510 + 2 + 94 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51029467) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27729 + ... + 29511.

It is an arithmetic number, because the mean of its divisors is an integer number (1685880).

Almost surely, 2^51029460 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51029460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80922240).

51029460 is an abundant number, since it is smaller than the sum of its proper divisors (110815020).

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

51029460 is a wasteful number, since it uses less digits than its factorization.

51029460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854 (or 1846 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 51029460 is about 7143.4907433271. The cubic root of 51029460 is about 370.9143686336.

The spelling of 51029460 in words is "fifty-one million, twenty-nine thousand, four hundred sixty".