45401421 has 16 divisors (see below), whose sum is σ = 66710336. Its totient is φ = 27288576.

The previous prime is 45401399. The next prime is 45401423. The reversal of 45401421 is 12410454.

It is a happy number.

45401421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 45401421 - 2¹¹ = 45399373 is a prime.

It is a super-2 number, since 2×45401421² = 4122578057638482, 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 (45401423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11860 + ... + 15213.

It is an arithmetic number, because the mean of its divisors is an integer number (4169396).

Almost surely, 2^45401421 is an apocalyptic number.

It is an amenable number.

45401421 is a deficient number, since it is larger than the sum of its proper divisors (21308915).

45401421 is a wasteful number, since it uses less digits than its factorization.

45401421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27132.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 45401421 is about 6738.0576578121. The cubic root of 45401421 is about 356.7438393387.

Adding to 45401421 its reverse (12410454), we get a palindrome (57811875).

The spelling of 45401421 in words is "forty-five million, four hundred one thousand, four hundred twenty-one".