1553460647 has 2 divisors, whose sum is σ = 1553460648. Its totient is φ = 1553460646.

The previous prime is 1553460551. The next prime is 1553460679. The reversal of 1553460647 is 7460643551.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1553460647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1553460047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776730323 + 776730324.

It is an arithmetic number, because the mean of its divisors is an integer number (776730324).

Almost surely, 2^1553460647 is an apocalyptic number.

1553460647 is a deficient number, since it is larger than the sum of its proper divisors (1).

1553460647 is an equidigital number, since it uses as much as digits as its factorization.

1553460647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 41.

The square root of 1553460647 is about 39413.9651265893. The cubic root of 1553460647 is about 1158.1551747711.

The spelling of 1553460647 in words is "one billion, five hundred fifty-three million, four hundred sixty thousand, six hundred forty-seven".