87293953 has 2 divisors, whose sum is σ = 87293954. Its totient is φ = 87293952.

The previous prime is 87293939. The next prime is 87293957. The reversal of 87293953 is 35939278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87291649 + 2304 = 9343^2 + 48^2 .

It is a cyclic number.

It is not a de Polignac number, because 87293953 - 2²¹ = 85196801 is a prime.

It is not a weakly prime, because it can be changed into another prime (87293957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43646976 + 43646977.

It is an arithmetic number, because the mean of its divisors is an integer number (43646977).

It is a Proth number, since it is equal to 333 ⋅ 2¹⁸ + 1 and 333 < 2¹⁸.

Almost surely, 2^87293953 is an apocalyptic number.

It is an amenable number.

87293953 is a deficient number, since it is larger than the sum of its proper divisors (1).

87293953 is an equidigital number, since it uses as much as digits as its factorization.

87293953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 46.

The square root of 87293953 is about 9343.1233000534. The cubic root of 87293953 is about 443.6032508733.

The spelling of 87293953 in words is "eighty-seven million, two hundred ninety-three thousand, nine hundred fifty-three".