55420152250 has 128 divisors (see below), whose sum is σ = 108910593792. Its totient is φ = 21097440000.

The previous prime is 55420152247. The next prime is 55420152313. The reversal of 55420152250 is 5225102455.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 120217020 + ... + 120217480.

It is an arithmetic number, because the mean of its divisors is an integer number (850864014).

Almost surely, 2^55420152250 is an apocalyptic number.

55420152250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55420152250 is a deficient number, since it is larger than the sum of its proper divisors (53490441542).

55420152250 is a wasteful number, since it uses less digits than its factorization.

55420152250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785 (or 775 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 31.

The spelling of 55420152250 in words is "fifty-five billion, four hundred twenty million, one hundred fifty-two thousand, two hundred fifty".