87442601 has 2 divisors, whose sum is σ = 87442602. Its totient is φ = 87442600.

The previous prime is 87442583. The next prime is 87442603. The reversal of 87442601 is 10624478.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72658576 + 14784025 = 8524^2 + 3845^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87442601 is a prime.

It is a Sophie Germain prime.

Together with 87442603, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (87442603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43721300 + 43721301.

It is an arithmetic number, because the mean of its divisors is an integer number (43721301).

Almost surely, 2^87442601 is an apocalyptic number.

It is an amenable number.

87442601 is a deficient number, since it is larger than the sum of its proper divisors (1).

87442601 is an equidigital number, since it uses as much as digits as its factorization.

87442601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 87442601 is about 9351.0748580043. The cubic root of 87442601 is about 443.8549038237.

The spelling of 87442601 in words is "eighty-seven million, four hundred forty-two thousand, six hundred one".