290421451 has 2 divisors, whose sum is σ = 290421452. Its totient is φ = 290421450.

The previous prime is 290421431. The next prime is 290421487. The reversal of 290421451 is 154124092.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 290421451 - 2²¹ = 288324299 is a prime.

It is not a weakly prime, because it can be changed into another prime (290421401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145210725 + 145210726.

It is an arithmetic number, because the mean of its divisors is an integer number (145210726).

Almost surely, 2^290421451 is an apocalyptic number.

290421451 is a deficient number, since it is larger than the sum of its proper divisors (1).

290421451 is an equidigital number, since it uses as much as digits as its factorization.

290421451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 290421451 is about 17041.7561008248. The cubic root of 290421451 is about 662.2310865889.

The spelling of 290421451 in words is "two hundred ninety million, four hundred twenty-one thousand, four hundred fifty-one".