46521421 has 4 divisors (see below), whose sum is σ = 48022144. Its totient is φ = 45020700.

The previous prime is 46521407. The next prime is 46521427. The reversal of 46521421 is 12412564.

It is a happy number.

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 46521421 - 2⁵ = 46521389 is a prime.

It is a super-2 number, since 2×46521421² = 4328485223718482, 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 (46521427) 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, 750315 + ... + 750376.

It is an arithmetic number, because the mean of its divisors is an integer number (12005536).

Almost surely, 2^46521421 is an apocalyptic number.

It is an amenable number.

46521421 is a deficient number, since it is larger than the sum of its proper divisors (1500723).

46521421 is a wasteful number, since it uses less digits than its factorization.

46521421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500722.

The product of its digits is 1920, while the sum is 25.

The square root of 46521421 is about 6820.6613315719. The cubic root of 46521421 is about 359.6535272499.

Adding to 46521421 its reverse (12412564), we get a palindrome (58933985).

The spelling of 46521421 in words is "forty-six million, five hundred twenty-one thousand, four hundred twenty-one".