1053215887 has 4 divisors (see below), whose sum is σ = 1060284600. Its totient is φ = 1046147176.

The previous prime is 1053215857. The next prime is 1053215897. The reversal of 1053215887 is 7885123501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1053215887 is a prime.

It is a super-2 number, since 2×1053215887² = 2218527409258393538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1053215827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3534133 + ... + 3534430.

It is an arithmetic number, because the mean of its divisors is an integer number (265071150).

Almost surely, 2^1053215887 is an apocalyptic number.

1053215887 is a deficient number, since it is larger than the sum of its proper divisors (7068713).

1053215887 is an equidigital number, since it uses as much as digits as its factorization.

1053215887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7068712.

The product of its (nonzero) digits is 67200, while the sum is 40.

The square root of 1053215887 is about 32453.2877687300. The cubic root of 1053215887 is about 1017.4329550730.

The spelling of 1053215887 in words is "one billion, fifty-three million, two hundred fifteen thousand, eight hundred eighty-seven".