551855542 has 12 divisors (see below), whose sum is σ = 962931780. Its totient is φ = 236509476.

The previous prime is 551855539. The next prime is 551855543. The reversal of 551855542 is 245558155.

It is a super-2 number, since 2×551855542² = 609089078472227528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 551855495 and 551855504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551855543) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2815492 + ... + 2815687.

It is an arithmetic number, because the mean of its divisors is an integer number (80244315).

Almost surely, 2^551855542 is an apocalyptic number.

551855542 is a deficient number, since it is larger than the sum of its proper divisors (411076238).

551855542 is a wasteful number, since it uses less digits than its factorization.

551855542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5631195 (or 5631188 counting only the distinct ones).

The product of its digits is 200000, while the sum is 40.

The square root of 551855542 is about 23491.6057773835. The cubic root of 551855542 is about 820.2416212419.

The spelling of 551855542 in words is "five hundred fifty-one million, eight hundred fifty-five thousand, five hundred forty-two".