45621511 has 4 divisors (see below), whose sum is σ = 49130872. Its totient is φ = 42112152.

The previous prime is 45621503. The next prime is 45621517. The reversal of 45621511 is 11512654.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 45621511 - 2³ = 45621503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45621517) 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, 1754661 + ... + 1754686.

It is an arithmetic number, because the mean of its divisors is an integer number (12282718).

Almost surely, 2^45621511 is an apocalyptic number.

45621511 is a deficient number, since it is larger than the sum of its proper divisors (3509361).

45621511 is a wasteful number, since it uses less digits than its factorization.

45621511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3509360.

The product of its digits is 1200, while the sum is 25.

The square root of 45621511 is about 6754.3697707484. The cubic root of 45621511 is about 357.3193662589.

The spelling of 45621511 in words is "forty-five million, six hundred twenty-one thousand, five hundred eleven".