51401416 has 32 divisors (see below), whose sum is σ = 106336800. Its totient is φ = 23098240.

The previous prime is 51401411. The next prime is 51401419. The reversal of 51401416 is 61410415.

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

It is not an unprimeable number, because it can be changed into a prime (51401411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4551 + ... + 11113.

It is an arithmetic number, because the mean of its divisors is an integer number (3323025).

Almost surely, 2^51401416 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 51401416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53168400).

51401416 is an abundant number, since it is smaller than the sum of its proper divisors (54935384).

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

51401416 is a wasteful number, since it uses less digits than its factorization.

51401416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6669 (or 6665 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 51401416 is about 7169.4780842123. The cubic root of 51401416 is about 371.8133915876.

It can be divided in two parts, 5140 and 1416, that added together give a palindrome (6556).

The spelling of 51401416 in words is "fifty-one million, four hundred one thousand, four hundred sixteen".