87456497 has 2 divisors, whose sum is σ = 87456498. Its totient is φ = 87456496.

The previous prime is 87456443. The next prime is 87456503. The reversal of 87456497 is 79465478.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74718736 + 12737761 = 8644^2 + 3569^2 .

It is a cyclic number.

It is not a de Polignac number, because 87456497 - 2¹² = 87452401 is a prime.

It is a super-2 number, since 2×87456497² = 15297277735022018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87456407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43728248 + 43728249.

It is an arithmetic number, because the mean of its divisors is an integer number (43728249).

Almost surely, 2^87456497 is an apocalyptic number.

It is an amenable number.

87456497 is a deficient number, since it is larger than the sum of its proper divisors (1).

87456497 is an equidigital number, since it uses as much as digits as its factorization.

87456497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1693440, while the sum is 50.

The square root of 87456497 is about 9351.8178446760. The cubic root of 87456497 is about 443.8784144123.

The spelling of 87456497 in words is "eighty-seven million, four hundred fifty-six thousand, four hundred ninety-seven".