1555535442 has 8 divisors (see below), whose sum is σ = 3111070896. Its totient is φ = 518511812.

The previous prime is 1555535407. The next prime is 1555535447. The reversal of 1555535442 is 2445355551.

It is a sphenic number, since it is the product of 3 distinct primes.

1555535442 is an admirable number.

It is a super-2 number, since 2×1555535442² = 4839381022636270728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1555535442.

It is not an unprimeable number, because it can be changed into a prime (1555535447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129627948 + ... + 129627959.

It is an arithmetic number, because the mean of its divisors is an integer number (388883862).

Almost surely, 2^1555535442 is an apocalyptic number.

1555535442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1555535442 is a wasteful number, since it uses less digits than its factorization.

1555535442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259255912.

The product of its digits is 300000, while the sum is 39.

The square root of 1555535442 is about 39440.2769006507. The cubic root of 1555535442 is about 1158.6705543272.

The spelling of 1555535442 in words is "one billion, five hundred fifty-five million, five hundred thirty-five thousand, four hundred forty-two".