46215021 has 4 divisors (see below), whose sum is σ = 61620032. Its totient is φ = 30810012.

The previous prime is 46214999. The next prime is 46215023. The reversal of 46215021 is 12051264.

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 not a de Polignac number, because 46215021 - 2⁵ = 46214989 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 (46215023) 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, 7702501 + ... + 7702506.

It is an arithmetic number, because the mean of its divisors is an integer number (15405008).

Almost surely, 2^46215021 is an apocalyptic number.

It is an amenable number.

46215021 is a deficient number, since it is larger than the sum of its proper divisors (15405011).

46215021 is a wasteful number, since it uses less digits than its factorization.

46215021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15405010.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 46215021 is about 6798.1630607099. The cubic root of 46215021 is about 358.8622024771.

Adding to 46215021 its reverse (12051264), we get a palindrome (58266285).

The spelling of 46215021 in words is "forty-six million, two hundred fifteen thousand, twenty-one".