55005203390 has 32 divisors (see below), whose sum is σ = 99587232000. Its totient is φ = 21874014208.

The previous prime is 55005203387. The next prime is 55005203413. The reversal of 55005203390 is 9330250055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1267166 + ... + 1309854.

It is an arithmetic number, because the mean of its divisors is an integer number (3112101000).

Almost surely, 2^55005203390 is an apocalyptic number.

55005203390 is a deficient number, since it is larger than the sum of its proper divisors (44582028610).

55005203390 is a wasteful number, since it uses less digits than its factorization.

55005203390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43444.

The product of its (nonzero) digits is 20250, while the sum is 32.

The spelling of 55005203390 in words is "fifty-five billion, five million, two hundred three thousand, three hundred ninety".