1055540215 has 8 divisors (see below), whose sum is σ = 1284000048. Its totient is φ = 832864320.

The previous prime is 1055540159. The next prime is 1055540237. The reversal of 1055540215 is 5120455501.

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

It is not a de Polignac number, because 1055540215 - 2⁹ = 1055539703 is a prime.

It is a super-2 number, since 2×1055540215² = 2228330290964492450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1445581 + ... + 1446310.

It is an arithmetic number, because the mean of its divisors is an integer number (160500006).

Almost surely, 2^1055540215 is an apocalyptic number.

1055540215 is a deficient number, since it is larger than the sum of its proper divisors (228459833).

1055540215 is an equidigital number, since it uses as much as digits as its factorization.

1055540215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2891969.

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 1055540215 is about 32489.0783956701. The cubic root of 1055540215 is about 1018.1808582061.

Adding to 1055540215 its reverse (5120455501), we get a palindrome (6175995716).

The spelling of 1055540215 in words is "one billion, fifty-five million, five hundred forty thousand, two hundred fifteen".