51342432 has 48 divisors (see below), whose sum is σ = 135363312. Its totient is φ = 17039360.

The previous prime is 51342407. The next prime is 51342451. The reversal of 51342432 is 23424315.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-3 number, since 3×51342432³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23632 + ... + 25712.

It is an arithmetic number, because the mean of its divisors is an integer number (2820069).

Almost surely, 2^51342432 is an apocalyptic number.

It is an amenable number.

51342432 is an abundant number, since it is smaller than the sum of its proper divisors (84020880).

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

51342432 is a wasteful number, since it uses less digits than its factorization.

51342432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2351 (or 2343 counting only the distinct ones).

The product of its digits is 2880, while the sum is 24.

The square root of 51342432 is about 7165.3633543596. The cubic root of 51342432 is about 371.6711164202.

Adding to 51342432 its reverse (23424315), we get a palindrome (74766747).

The spelling of 51342432 in words is "fifty-one million, three hundred forty-two thousand, four hundred thirty-two".