1087551605 has 8 divisors (see below), whose sum is σ = 1491499392. Its totient is φ = 745749648.

The previous prime is 1087551601. The next prime is 1087551613. The reversal of 1087551605 is 5061557801.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1087551605 - 2² = 1087551601 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1087551601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15536417 + ... + 15536486.

It is an arithmetic number, because the mean of its divisors is an integer number (186437424).

Almost surely, 2^1087551605 is an apocalyptic number.

It is an amenable number.

1087551605 is a deficient number, since it is larger than the sum of its proper divisors (403947787).

1087551605 is an equidigital number, since it uses as much as digits as its factorization.

1087551605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31072915.

The product of its (nonzero) digits is 42000, while the sum is 38.

The square root of 1087551605 is about 32978.0473193911. The cubic root of 1087551605 is about 1028.3713239799.

The spelling of 1087551605 in words is "one billion, eighty-seven million, five hundred fifty-one thousand, six hundred five".