87500401 has 2 divisors, whose sum is σ = 87500402. Its totient is φ = 87500400.

The previous prime is 87500381. The next prime is 87500407. The reversal of 87500401 is 10400578.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58599025 + 28901376 = 7655^2 + 5376^2 .

It is a cyclic number.

It is not a de Polignac number, because 87500401 - 2¹¹ = 87498353 is a prime.

It is not a weakly prime, because it can be changed into another prime (87500407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43750200 + 43750201.

It is an arithmetic number, because the mean of its divisors is an integer number (43750201).

Almost surely, 2^87500401 is an apocalyptic number.

It is an amenable number.

87500401 is a deficient number, since it is larger than the sum of its proper divisors (1).

87500401 is an equidigital number, since it uses as much as digits as its factorization.

87500401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 87500401 is about 9354.1649012619. The cubic root of 87500401 is about 443.9526790598.

Adding to 87500401 its reverse (10400578), we get a palindrome (97900979).

The spelling of 87500401 in words is "eighty-seven million, five hundred thousand, four hundred one".