51479454 has 32 divisors (see below), whose sum is σ = 112410144. Its totient is φ = 15621120.

The previous prime is 51479453. The next prime is 51479513. The reversal of 51479454 is 45497415.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51479453) 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, 1174 + ... + 10214.

It is an arithmetic number, because the mean of its divisors is an integer number (3512817).

Almost surely, 2^51479454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51479454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56205072).

51479454 is an abundant number, since it is smaller than the sum of its proper divisors (60930690).

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

51479454 is a wasteful number, since it uses less digits than its factorization.

51479454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9132.

The product of its digits is 100800, while the sum is 39.

The square root of 51479454 is about 7174.9183967485. The cubic root of 51479454 is about 372.0014597006.

The spelling of 51479454 in words is "fifty-one million, four hundred seventy-nine thousand, four hundred fifty-four".