51141420 has 144 divisors (see below), whose sum is σ = 176746752. Its totient is φ = 11848320.

The previous prime is 51141379. The next prime is 51141439. The reversal of 51141420 is 2414115.

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

It is a junction number, because it is equal to n+sod(n) for n = 51141393 and 51141402.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44979 + ... + 46101.

It is an arithmetic number, because the mean of its divisors is an integer number (1227408).

Almost surely, 2^51141420 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 51141420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88373376).

51141420 is an abundant number, since it is smaller than the sum of its proper divisors (125605332).

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

51141420 is a wasteful number, since it uses less digits than its factorization.

51141420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172 (or 1167 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 51141420 is about 7151.3229545309. The cubic root of 51141420 is about 371.1854358355.

Adding to 51141420 its reverse (2414115), we get a palindrome (53555535).

The spelling of 51141420 in words is "fifty-one million, one hundred forty-one thousand, four hundred twenty".