46451421 has 32 divisors (see below), whose sum is σ = 72483840. Its totient is φ = 29343600.

The previous prime is 46451413. The next prime is 46451459. The reversal of 46451421 is 12415464.

46451421 is a `hidden beast` number, since 4 + 645 + 14 + 2 + 1 = 666.

It is not a de Polignac number, because 46451421 - 2³ = 46451413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46451491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81066 + ... + 81636.

It is an arithmetic number, because the mean of its divisors is an integer number (2265120).

Almost surely, 2^46451421 is an apocalyptic number.

It is an amenable number.

46451421 is a deficient number, since it is larger than the sum of its proper divisors (26032419).

46451421 is a wasteful number, since it uses less digits than its factorization.

46451421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734 (or 728 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 46451421 is about 6815.5279325963. The cubic root of 46451421 is about 359.4730484933.

Adding to 46451421 its reverse (12415464), we get a palindrome (58866885).

The spelling of 46451421 in words is "forty-six million, four hundred fifty-one thousand, four hundred twenty-one".