1455050921 has 2 divisors, whose sum is σ = 1455050922. Its totient is φ = 1455050920.

The previous prime is 1455050917. The next prime is 1455051019. The reversal of 1455050921 is 1290505541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 937033321 + 518017600 = 30611^2 + 22760^2 .

It is a cyclic number.

It is not a de Polignac number, because 1455050921 - 2² = 1455050917 is a prime.

It is not a weakly prime, because it can be changed into another prime (1455050021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 727525460 + 727525461.

It is an arithmetic number, because the mean of its divisors is an integer number (727525461).

Almost surely, 2^1455050921 is an apocalyptic number.

It is an amenable number.

1455050921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1455050921 is an equidigital number, since it uses as much as digits as its factorization.

1455050921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 32.

The square root of 1455050921 is about 38145.1297153385. The cubic root of 1455050921 is about 1133.1639007285.

The spelling of 1455050921 in words is "one billion, four hundred fifty-five million, fifty thousand, nine hundred twenty-one".