87557075563 has 2 divisors, whose sum is σ = 87557075564. Its totient is φ = 87557075562.

The previous prime is 87557075561. The next prime is 87557075657. The reversal of 87557075563 is 36557075578.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87557075563 - 2¹ = 87557075561 is a prime.

It is a super-2 number, since 2×87557075563² (a number of 23 digits) contains 22 as substring.

Together with 87557075561, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 87557075498 and 87557075507.

It is not a weakly prime, because it can be changed into another prime (87557075561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43778537781 + 43778537782.

It is an arithmetic number, because the mean of its divisors is an integer number (43778537782).

Almost surely, 2^87557075563 is an apocalyptic number.

87557075563 is a deficient number, since it is larger than the sum of its proper divisors (1).

87557075563 is an equidigital number, since it uses as much as digits as its factorization.

87557075563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30870000, while the sum is 58.

The spelling of 87557075563 in words is "eighty-seven billion, five hundred fifty-seven million, seventy-five thousand, five hundred sixty-three".