87448157 has 2 divisors, whose sum is σ = 87448158. Its totient is φ = 87448156.

The previous prime is 87448099. The next prime is 87448171. The reversal of 87448157 is 75184478.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77246521 + 10201636 = 8789^2 + 3194^2 .

It is a cyclic number.

It is not a de Polignac number, because 87448157 - 2¹⁶ = 87382621 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87448457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43724078 + 43724079.

It is an arithmetic number, because the mean of its divisors is an integer number (43724079).

Almost surely, 2^87448157 is an apocalyptic number.

It is an amenable number.

87448157 is a deficient number, since it is larger than the sum of its proper divisors (1).

87448157 is an equidigital number, since it uses as much as digits as its factorization.

87448157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 250880, while the sum is 44.

The square root of 87448157 is about 9351.3719314334. The cubic root of 87448157 is about 443.8643042975.

The spelling of 87448157 in words is "eighty-seven million, four hundred forty-eight thousand, one hundred fifty-seven".