1552045091 has 4 divisors (see below), whose sum is σ = 1578351000. Its totient is φ = 1525739184.

The previous prime is 1552045069. The next prime is 1552045093. The reversal of 1552045091 is 1905402551.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1552045091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1552045093) 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, 13152866 + ... + 13152983.

It is an arithmetic number, because the mean of its divisors is an integer number (394587750).

Almost surely, 2^1552045091 is an apocalyptic number.

1552045091 is a deficient number, since it is larger than the sum of its proper divisors (26305909).

1552045091 is an equidigital number, since it uses as much as digits as its factorization.

1552045091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26305908.

The product of its (nonzero) digits is 9000, while the sum is 32.

The square root of 1552045091 is about 39396.0034902019. The cubic root of 1552045091 is about 1157.8032869333.

The spelling of 1552045091 in words is "one billion, five hundred fifty-two million, forty-five thousand, ninety-one".