1552442111 has 4 divisors (see below), whose sum is σ = 1693573224. Its totient is φ = 1411311000.

The previous prime is 1552442071. The next prime is 1552442147. The reversal of 1552442111 is 1112442551.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1552442111 - 2²⁶ = 1485333247 is a prime.

It is a super-2 number, since 2×1552442111² = 4820153016012272642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1552442191) 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, 70565540 + ... + 70565561.

It is an arithmetic number, because the mean of its divisors is an integer number (423393306).

Almost surely, 2^1552442111 is an apocalyptic number.

1552442111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1552442111 is a deficient number, since it is larger than the sum of its proper divisors (141131113).

1552442111 is a wasteful number, since it uses less digits than its factorization.

1552442111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141131112.

The product of its digits is 1600, while the sum is 26.

The square root of 1552442111 is about 39401.0420039877. The cubic root of 1552442111 is about 1157.9020022507.

Adding to 1552442111 its reverse (1112442551), we get a palindrome (2664884662).

The spelling of 1552442111 in words is "one billion, five hundred fifty-two million, four hundred forty-two thousand, one hundred eleven".