45821513 has 4 divisors (see below), whose sum is σ = 45859968. Its totient is φ = 45783060.

The previous prime is 45821509. The next prime is 45821551. The reversal of 45821513 is 31512854.

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 45821513 - 2² = 45821509 is a prime.

It is a super-2 number, since 2×45821513² = 4199222107218338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45821563) 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, 17381 + ... + 19842.

It is an arithmetic number, because the mean of its divisors is an integer number (11464992).

Almost surely, 2^45821513 is an apocalyptic number.

It is an amenable number.

45821513 is a deficient number, since it is larger than the sum of its proper divisors (38455).

45821513 is a wasteful number, since it uses less digits than its factorization.

45821513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38454.

The product of its digits is 4800, while the sum is 29.

The square root of 45821513 is about 6769.1589580981. The cubic root of 45821513 is about 357.8407607192.

The spelling of 45821513 in words is "forty-five million, eight hundred twenty-one thousand, five hundred thirteen".