1487045561 has 2 divisors, whose sum is σ = 1487045562. Its totient is φ = 1487045560.

The previous prime is 1487045533. The next prime is 1487045569. The reversal of 1487045561 is 1655407841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1410378025 + 76667536 = 37555^2 + 8756^2 .

It is a cyclic number.

It is not a de Polignac number, because 1487045561 - 2²⁶ = 1419936697 is a prime.

It is a super-2 number, since 2×1487045561² = 4422609000979609442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1487045569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 743522780 + 743522781.

It is an arithmetic number, because the mean of its divisors is an integer number (743522781).

Almost surely, 2^1487045561 is an apocalyptic number.

It is an amenable number.

1487045561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1487045561 is an equidigital number, since it uses as much as digits as its factorization.

1487045561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 1487045561 is about 38562.2297202846. The cubic root of 1487045561 is about 1141.4093477961.

The spelling of 1487045561 in words is "one billion, four hundred eighty-seven million, forty-five thousand, five hundred sixty-one".