87401537 has 2 divisors, whose sum is σ = 87401538. Its totient is φ = 87401536.

The previous prime is 87401519. The next prime is 87401549. The reversal of 87401537 is 73510478.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47761921 + 39639616 = 6911^2 + 6296^2 .

It is a cyclic number.

It is not a de Polignac number, because 87401537 - 2¹⁴ = 87385153 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87401497 and 87401506.

It is not a weakly prime, because it can be changed into another prime (87401507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43700768 + 43700769.

It is an arithmetic number, because the mean of its divisors is an integer number (43700769).

Almost surely, 2^87401537 is an apocalyptic number.

It is an amenable number.

87401537 is a deficient number, since it is larger than the sum of its proper divisors (1).

87401537 is an equidigital number, since it uses as much as digits as its factorization.

87401537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 87401537 is about 9348.8789167472. The cubic root of 87401537 is about 443.7854132420.

The spelling of 87401537 in words is "eighty-seven million, four hundred one thousand, five hundred thirty-seven".