55392402 has 32 divisors (see below), whose sum is σ = 120439872. Its totient is φ = 16881984.

The previous prime is 55392401. The next prime is 55392413. The reversal of 55392402 is 20429355.

It is a self number, because there is not a number n which added to its sum of digits gives 55392402.

It is not an unprimeable number, because it can be changed into a prime (55392401) 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, 5028 + ... + 11664.

It is an arithmetic number, because the mean of its divisors is an integer number (3763746).

Almost surely, 2^55392402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55392402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60219936).

55392402 is an abundant number, since it is smaller than the sum of its proper divisors (65047470).

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

55392402 is a wasteful number, since it uses less digits than its factorization.

55392402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6762.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 55392402 is about 7442.6072044681. The cubic root of 55392402 is about 381.1975195342.

The spelling of 55392402 in words is "fifty-five million, three hundred ninety-two thousand, four hundred two".