1011553045 has 4 divisors (see below), whose sum is σ = 1213863660. Its totient is φ = 809242432.

The previous prime is 1011553021. The next prime is 1011553093. The reversal of 1011553045 is 5403551101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5403551101 = 13 ⋅415657777.

It can be written as a sum of positive squares in 2 ways, for example, as 515199204 + 496353841 = 22698^2 + 22279^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011553045 - 2⁵ = 1011553013 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101155300 + ... + 101155309.

It is an arithmetic number, because the mean of its divisors is an integer number (303465915).

Almost surely, 2^1011553045 is an apocalyptic number.

It is an amenable number.

1011553045 is a deficient number, since it is larger than the sum of its proper divisors (202310615).

1011553045 is an equidigital number, since it uses as much as digits as its factorization.

1011553045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202310614.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 1011553045 is about 31804.9217103265. The cubic root of 1011553045 is about 1003.8362791428.

The spelling of 1011553045 in words is "one billion, eleven million, five hundred fifty-three thousand, forty-five".