45652821 has 4 divisors (see below), whose sum is σ = 60870432. Its totient is φ = 30435212.

The previous prime is 45652811. The next prime is 45652823. The reversal of 45652821 is 12825654.

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.

It is a cyclic number.

It is not a de Polignac number, because 45652821 - 2¹⁵ = 45620053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45652823) 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, 7608801 + ... + 7608806.

It is an arithmetic number, because the mean of its divisors is an integer number (15217608).

Almost surely, 2^45652821 is an apocalyptic number.

It is an amenable number.

45652821 is a deficient number, since it is larger than the sum of its proper divisors (15217611).

45652821 is a wasteful number, since it uses less digits than its factorization.

45652821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15217610.

The product of its digits is 19200, while the sum is 33.

The square root of 45652821 is about 6756.6871320197. The cubic root of 45652821 is about 357.4010902141.

The spelling of 45652821 in words is "forty-five million, six hundred fifty-two thousand, eight hundred twenty-one".