45537421 has 8 divisors (see below), whose sum is σ = 46487520. Its totient is φ = 44595408.

The previous prime is 45537409. The next prime is 45537449. The reversal of 45537421 is 12473554.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45537421 - 2¹⁵ = 45504653 is a prime.

It is a super-2 number, since 2×45537421² = 4147313422662482, 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 (45537451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10095 + ... + 13891.

It is an arithmetic number, because the mean of its divisors is an integer number (5810940).

Almost surely, 2^45537421 is an apocalyptic number.

It is an amenable number.

45537421 is a deficient number, since it is larger than the sum of its proper divisors (950099).

45537421 is a wasteful number, since it uses less digits than its factorization.

45537421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4043.

The product of its digits is 16800, while the sum is 31.

The square root of 45537421 is about 6748.1420405916. The cubic root of 45537421 is about 357.0996930920.

The spelling of 45537421 in words is "forty-five million, five hundred thirty-seven thousand, four hundred twenty-one".