73621451 has 2 divisors, whose sum is σ = 73621452. Its totient is φ = 73621450.

The previous prime is 73621433. The next prime is 73621463. The reversal of 73621451 is 15412637.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73621451 - 2²² = 69427147 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (73621481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36810725 + 36810726.

It is an arithmetic number, because the mean of its divisors is an integer number (36810726).

Almost surely, 2^73621451 is an apocalyptic number.

73621451 is a deficient number, since it is larger than the sum of its proper divisors (1).

73621451 is an equidigital number, since it uses as much as digits as its factorization.

73621451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 29.

The square root of 73621451 is about 8580.2943422705. The cubic root of 73621451 is about 419.1165310614.

The spelling of 73621451 in words is "seventy-three million, six hundred twenty-one thousand, four hundred fifty-one".