87547451 has 2 divisors, whose sum is σ = 87547452. Its totient is φ = 87547450.

The previous prime is 87547409. The next prime is 87547457. The reversal of 87547451 is 15474578.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87547451 - 2¹⁰ = 87546427 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 87547399 and 87547408.

It is not a weakly prime, because it can be changed into another prime (87547457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43773725 + 43773726.

It is an arithmetic number, because the mean of its divisors is an integer number (43773726).

Almost surely, 2^87547451 is an apocalyptic number.

87547451 is a deficient number, since it is larger than the sum of its proper divisors (1).

87547451 is an equidigital number, since it uses as much as digits as its factorization.

87547451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 156800, while the sum is 41.

The square root of 87547451 is about 9356.6794858005. The cubic root of 87547451 is about 444.0322376695.

The spelling of 87547451 in words is "eighty-seven million, five hundred forty-seven thousand, four hundred fifty-one".