2015553049 has 2 divisors, whose sum is σ = 2015553050. Its totient is φ = 2015553048.

The previous prime is 2015553017. The next prime is 2015553091. The reversal of 2015553049 is 9403555102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2014214400 + 1338649 = 44880^2 + 1157^2 .

It is a cyclic number.

It is not a de Polignac number, because 2015553049 - 2⁵ = 2015553017 is a prime.

It is not a weakly prime, because it can be changed into another prime (2015550049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1007776524 + 1007776525.

It is an arithmetic number, because the mean of its divisors is an integer number (1007776525).

Almost surely, 2^2015553049 is an apocalyptic number.

It is an amenable number.

2015553049 is a deficient number, since it is larger than the sum of its proper divisors (1).

2015553049 is an equidigital number, since it uses as much as digits as its factorization.

2015553049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 2015553049 is about 44894.9111704211. The cubic root of 2015553049 is about 1263.1785560427.

The spelling of 2015553049 in words is "two billion, fifteen million, five hundred fifty-three thousand, forty-nine".