1562472661 has 2 divisors, whose sum is σ = 1562472662. Its totient is φ = 1562472660.

The previous prime is 1562472631. The next prime is 1562472679. The reversal of 1562472661 is 1662742651.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1544883025 + 17589636 = 39305^2 + 4194^2 .

It is an emirp because it is prime and its reverse (1662742651) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1562472661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1562472631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 781236330 + 781236331.

It is an arithmetic number, because the mean of its divisors is an integer number (781236331).

Almost surely, 2^1562472661 is an apocalyptic number.

It is an amenable number.

1562472661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1562472661 is an equidigital number, since it uses as much as digits as its factorization.

1562472661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 40.

The square root of 1562472661 is about 39528.1249365562. The cubic root of 1562472661 is about 1160.3904405559.

The spelling of 1562472661 in words is "one billion, five hundred sixty-two million, four hundred seventy-two thousand, six hundred sixty-one".