45821511 has 16 divisors (see below), whose sum is σ = 71877600. Its totient is φ = 28750464.

The previous prime is 45821509. The next prime is 45821551. The reversal of 45821511 is 11512854.

It is not a de Polignac number, because 45821511 - 2¹ = 45821509 is a prime.

It is a super-2 number, since 2×45821511² = 4199221740646242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45821551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49456 + ... + 50373.

It is an arithmetic number, because the mean of its divisors is an integer number (4492350).

Almost surely, 2^45821511 is an apocalyptic number.

45821511 is a deficient number, since it is larger than the sum of its proper divisors (26056089).

45821511 is a wasteful number, since it uses less digits than its factorization.

45821511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99855 (or 99849 counting only the distinct ones).

The product of its digits is 1600, while the sum is 27.

The square root of 45821511 is about 6769.1588103693. The cubic root of 45821511 is about 357.8407555129.

The spelling of 45821511 in words is "forty-five million, eight hundred twenty-one thousand, five hundred eleven".