51633342 has 32 divisors (see below), whose sum is σ = 116912160. Its totient is φ = 16885440.

The previous prime is 51633341. The next prime is 51633353. The reversal of 51633342 is 24333615.

It is a happy number.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51633341) 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, 6159 + ... + 11882.

It is an arithmetic number, because the mean of its divisors is an integer number (3653505).

Almost surely, 2^51633342 is an apocalyptic number.

51633342 is an abundant number, since it is smaller than the sum of its proper divisors (65278818).

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

51633342 is a wasteful number, since it uses less digits than its factorization.

51633342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18105 (or 18099 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 51633342 is about 7185.6344187552. The cubic root of 51633342 is about 372.3717667401.

Adding to 51633342 its reverse (24333615), we get a palindrome (75966957).

The spelling of 51633342 in words is "fifty-one million, six hundred thirty-three thousand, three hundred forty-two".