45557437 has 4 divisors (see below), whose sum is σ = 46668636. Its totient is φ = 44446240.

The previous prime is 45557431. The next prime is 45557441. The reversal of 45557437 is 73475554.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73475554 = 2 ⋅36737777.

It can be written as a sum of positive squares in 2 ways, for example, as 3709476 + 41847961 = 1926^2 + 6469^2 .

It is a cyclic number.

It is not a de Polignac number, because 45557437 - 2¹⁵ = 45524669 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45557437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45557431) 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, 555538 + ... + 555619.

It is an arithmetic number, because the mean of its divisors is an integer number (11667159).

Almost surely, 2^45557437 is an apocalyptic number.

It is an amenable number.

45557437 is a deficient number, since it is larger than the sum of its proper divisors (1111199).

45557437 is a wasteful number, since it uses less digits than its factorization.

45557437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111198.

The product of its digits is 294000, while the sum is 40.

The square root of 45557437 is about 6749.6249525437. The cubic root of 45557437 is about 357.1520065542.

The spelling of 45557437 in words is "forty-five million, five hundred fifty-seven thousand, four hundred thirty-seven".