1552122091 has 4 divisors (see below), whose sum is σ = 1671516112. Its totient is φ = 1432728072.

The previous prime is 1552122071. The next prime is 1552122097. The reversal of 1552122091 is 1902212551.

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

It is a cyclic number.

It is not a de Polignac number, because 1552122091 - 2²³ = 1543733483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1552122097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59696991 + ... + 59697016.

It is an arithmetic number, because the mean of its divisors is an integer number (417879028).

Almost surely, 2^1552122091 is an apocalyptic number.

1552122091 is a deficient number, since it is larger than the sum of its proper divisors (119394021).

1552122091 is a wasteful number, since it uses less digits than its factorization.

1552122091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119394020.

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 1552122091 is about 39396.9807345690. The cubic root of 1552122091 is about 1157.8224335804.

The spelling of 1552122091 in words is "one billion, five hundred fifty-two million, one hundred twenty-two thousand, ninety-one".