64213451 has 2 divisors, whose sum is σ = 64213452. Its totient is φ = 64213450.

The previous prime is 64213441. The next prime is 64213459. The reversal of 64213451 is 15431246.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64213451 - 2²² = 60019147 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64213451.

It is not a weakly prime, because it can be changed into another prime (64213459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32106725 + 32106726.

It is an arithmetic number, because the mean of its divisors is an integer number (32106726).

Almost surely, 2^64213451 is an apocalyptic number.

64213451 is a deficient number, since it is larger than the sum of its proper divisors (1).

64213451 is an equidigital number, since it uses as much as digits as its factorization.

64213451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 26.

The square root of 64213451 is about 8013.3295826392. The cubic root of 64213451 is about 400.4441961252. Note that the first 3 decimals are identical.

Adding to 64213451 its reverse (15431246), we get a palindrome (79644697).

The spelling of 64213451 in words is "sixty-four million, two hundred thirteen thousand, four hundred fifty-one".