87511033 has 2 divisors, whose sum is σ = 87511034. Its totient is φ = 87511032.

The previous prime is 87511007. The next prime is 87511057. The reversal of 87511033 is 33011578.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44582329 + 42928704 = 6677^2 + 6552^2 .

It is a cyclic number.

It is not a de Polignac number, because 87511033 - 2²⁵ = 53956601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87510992 and 87511010.

It is not a weakly prime, because it can be changed into another prime (87511933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43755516 + 43755517.

It is an arithmetic number, because the mean of its divisors is an integer number (43755517).

Almost surely, 2^87511033 is an apocalyptic number.

It is an amenable number.

87511033 is a deficient number, since it is larger than the sum of its proper divisors (1).

87511033 is an equidigital number, since it uses as much as digits as its factorization.

87511033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 87511033 is about 9354.7331870022. The cubic root of 87511033 is about 443.9706596011.

The spelling of 87511033 in words is "eighty-seven million, five hundred eleven thousand, thirty-three".