51004254 has 32 divisors (see below), whose sum is σ = 117112320. Its totient is φ = 14506272.

The previous prime is 51004253. The next prime is 51004277. The reversal of 51004254 is 45240015.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51004254.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51004253) 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, 6967 + ... + 12269.

It is an arithmetic number, because the mean of its divisors is an integer number (3659760).

Almost surely, 2^51004254 is an apocalyptic number.

51004254 is an abundant number, since it is smaller than the sum of its proper divisors (66108066).

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

51004254 is a wasteful number, since it uses less digits than its factorization.

51004254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5544.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 51004254 is about 7141.7262619062. The cubic root of 51004254 is about 370.8532875290.

Adding to 51004254 its reverse (45240015), we get a palindrome (96244269).

The spelling of 51004254 in words is "fifty-one million, four thousand, two hundred fifty-four".