55452040 has 32 divisors (see below), whose sum is σ = 142591680. Its totient is φ = 19012032.

The previous prime is 55452037. The next prime is 55452053. The reversal of 55452040 is 4025455.

It is a junction number, because it is equal to n+sod(n) for n = 55451996 and 55452014.

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, 98742 + ... + 99301.

It is an arithmetic number, because the mean of its divisors is an integer number (4455990).

Almost surely, 2^55452040 is an apocalyptic number.

It is an amenable number.

55452040 is an abundant number, since it is smaller than the sum of its proper divisors (87139640).

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

55452040 is a wasteful number, since it uses less digits than its factorization.

55452040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198061 (or 198057 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 55452040 is about 7446.6126527435. The cubic root of 55452040 is about 381.3342753765.

Adding to 55452040 its reverse (4025455), we get a palindrome (59477495).

The spelling of 55452040 in words is "fifty-five million, four hundred fifty-two thousand, forty".