55302040 has 16 divisors (see below), whose sum is σ = 124429680. Its totient is φ = 22120800.

The previous prime is 55302011. The next prime is 55302053. The reversal of 55302040 is 4020355.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 55301999 and 55302017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 691236 + ... + 691315.

It is an arithmetic number, because the mean of its divisors is an integer number (7776855).

Almost surely, 2^55302040 is an apocalyptic number.

It is an amenable number.

55302040 is an abundant number, since it is smaller than the sum of its proper divisors (69127640).

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

55302040 is a wasteful number, since it uses less digits than its factorization.

55302040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382562 (or 1382558 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 55302040 is about 7436.5341389655. The cubic root of 55302040 is about 380.9901233538.

Adding to 55302040 its reverse (4020355), we get a palindrome (59322395).

The spelling of 55302040 in words is "fifty-five million, three hundred two thousand, forty".