555251240420 has 12 divisors (see below), whose sum is σ = 1166027604924. Its totient is φ = 222100496160.

The previous prime is 555251240381. The next prime is 555251240459. The reversal of 555251240420 is 24042152555.

It is an interprime number because it is at equal distance from previous prime (555251240381) and next prime (555251240459).

It can be written as a sum of positive squares in 2 ways, for example, as 244030072036 + 311221168384 = 493994^2 + 557872^2 .

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, 13881280991 + ... + 13881281030.

It is an arithmetic number, because the mean of its divisors is an integer number (97168967077).

Almost surely, 2^555251240420 is an apocalyptic number.

It is an amenable number.

555251240420 is an abundant number, since it is smaller than the sum of its proper divisors (610776364504).

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

555251240420 is a wasteful number, since it uses less digits than its factorization.

555251240420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27762562030 (or 27762562028 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 35.

Adding to 555251240420 its reverse (24042152555), we get a palindrome (579293392975).

The spelling of 555251240420 in words is "five hundred fifty-five billion, two hundred fifty-one million, two hundred forty thousand, four hundred twenty".