45511537 has 4 divisors (see below), whose sum is σ = 45843876. Its totient is φ = 45179200.

The previous prime is 45511483. The next prime is 45511547. The reversal of 45511537 is 73511554.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15492096 + 30019441 = 3936^2 + 5479^2 .

It is a cyclic number.

It is not a de Polignac number, because 45511537 - 2⁷ = 45511409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45511499 and 45511508.

It is not an unprimeable number, because it can be changed into a prime (45511547) 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, 165964 + ... + 166237.

It is an arithmetic number, because the mean of its divisors is an integer number (11460969).

Almost surely, 2^45511537 is an apocalyptic number.

It is an amenable number.

45511537 is a deficient number, since it is larger than the sum of its proper divisors (332339).

45511537 is a wasteful number, since it uses less digits than its factorization.

45511537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332338.

The product of its digits is 10500, while the sum is 31.

The square root of 45511537 is about 6746.2239067496. The cubic root of 45511537 is about 357.0320203947.

The spelling of 45511537 in words is "forty-five million, five hundred eleven thousand, five hundred thirty-seven".