45897421 has 4 divisors (see below), whose sum is σ = 46047232. Its totient is φ = 45747612.

The previous prime is 45897403. The next prime is 45897431. The reversal of 45897421 is 12479854.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12479854 = 2 ⋅6239927.

It is a cyclic number.

It is not a de Polignac number, because 45897421 - 2¹³ = 45889229 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 (45897431) 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, 74445 + ... + 75058.

It is an arithmetic number, because the mean of its divisors is an integer number (11511808).

Almost surely, 2^45897421 is an apocalyptic number.

It is an amenable number.

45897421 is a deficient number, since it is larger than the sum of its proper divisors (149811).

45897421 is a wasteful number, since it uses less digits than its factorization.

45897421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149810.

The product of its digits is 80640, while the sum is 40.

The square root of 45897421 is about 6774.7635383089. The cubic root of 45897421 is about 358.0382515852.

It can be divided in two parts, 458 and 97421, that added together give a palindrome (97879).

The spelling of 45897421 in words is "forty-five million, eight hundred ninety-seven thousand, four hundred twenty-one".