1450631557 has 2 divisors, whose sum is σ = 1450631558. Its totient is φ = 1450631556.

The previous prime is 1450631543. The next prime is 1450631563. The reversal of 1450631557 is 7551360541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1413835201 + 36796356 = 37601^2 + 6066^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1450631557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1450631527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 725315778 + 725315779.

It is an arithmetic number, because the mean of its divisors is an integer number (725315779).

Almost surely, 2^1450631557 is an apocalyptic number.

It is an amenable number.

1450631557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1450631557 is an equidigital number, since it uses as much as digits as its factorization.

1450631557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63000, while the sum is 37.

The square root of 1450631557 is about 38087.1573762075. The cubic root of 1450631557 is about 1132.0155005119.

The spelling of 1450631557 in words is "one billion, four hundred fifty million, six hundred thirty-one thousand, five hundred fifty-seven".