51651146 has 32 divisors (see below), whose sum is σ = 86400000. Its totient is φ = 23063040.

The previous prime is 51651143. The next prime is 51651157. The reversal of 51651146 is 64115615.

It is a super-2 number, since 2×51651146² = 5335681766226632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (51651143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40730 + ... + 41978.

It is an arithmetic number, because the mean of its divisors is an integer number (2700000).

Almost surely, 2^51651146 is an apocalyptic number.

51651146 is a deficient number, since it is larger than the sum of its proper divisors (34748854).

51651146 is a wasteful number, since it uses less digits than its factorization.

51651146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334.

The product of its digits is 3600, while the sum is 29.

The square root of 51651146 is about 7186.8731726670. The cubic root of 51651146 is about 372.4145617302.

The spelling of 51651146 in words is "fifty-one million, six hundred fifty-one thousand, one hundred forty-six".