1457002621 has 2 divisors, whose sum is σ = 1457002622. Its totient is φ = 1457002620.

The previous prime is 1457002619. The next prime is 1457002633. The reversal of 1457002621 is 1262007541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1375371396 + 81631225 = 37086^2 + 9035^2 .

It is a cyclic number.

It is not a de Polignac number, because 1457002621 - 2¹ = 1457002619 is a prime.

Together with 1457002619, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1457002621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1457002681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 728501310 + 728501311.

It is an arithmetic number, because the mean of its divisors is an integer number (728501311).

Almost surely, 2^1457002621 is an apocalyptic number.

It is an amenable number.

1457002621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1457002621 is an equidigital number, since it uses as much as digits as its factorization.

1457002621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 1457002621 is about 38170.7037006131. The cubic root of 1457002621 is about 1133.6703223857.

The spelling of 1457002621 in words is "one billion, four hundred fifty-seven million, two thousand, six hundred twenty-one".