45677421 has 6 divisors (see below), whose sum is σ = 65978510. Its totient is φ = 30451608.

The previous prime is 45677417. The next prime is 45677447. The reversal of 45677421 is 12477654.

45677421 is a `hidden beast` number, since 4 + 567 + 74 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 45562500 + 114921 = 6750^2 + 339^2 .

It is not a de Polignac number, because 45677421 - 2² = 45677417 is a prime.

It is a super-2 number, since 2×45677421² = 4172853578422482, 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 (45677461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2537626 + ... + 2537643.

Almost surely, 2^45677421 is an apocalyptic number.

It is an amenable number.

45677421 is a deficient number, since it is larger than the sum of its proper divisors (20301089).

45677421 is a wasteful number, since it uses less digits than its factorization.

45677421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5075275 (or 5075272 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 45677421 is about 6758.5073056112. The cubic root of 45677421 is about 357.4652738206.

It can be divided in two parts, 456 and 77421, that added together give a palindrome (77877).

The spelling of 45677421 in words is "forty-five million, six hundred seventy-seven thousand, four hundred twenty-one".