45511709 has 4 divisors (see below), whose sum is σ = 45541440. Its totient is φ = 45481980.

The previous prime is 45511699. The next prime is 45511717. The reversal of 45511709 is 90711554.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90711554 = 2 ⋅45355777.

It is a cyclic number.

It is not a de Polignac number, because 45511709 - 2¹² = 45507613 is a prime.

It is a super-2 number, since 2×45511709² = 4142631312201362, 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 (45511769) 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, 12437 + ... + 15674.

It is an arithmetic number, because the mean of its divisors is an integer number (11385360).

Almost surely, 2^45511709 is an apocalyptic number.

It is an amenable number.

45511709 is a deficient number, since it is larger than the sum of its proper divisors (29731).

45511709 is a wasteful number, since it uses less digits than its factorization.

45511709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29730.

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 45511709 is about 6746.2366546097. The cubic root of 45511709 is about 357.0324701666.

The spelling of 45511709 in words is "forty-five million, five hundred eleven thousand, seven hundred nine".