4155521505 has 32 divisors (see below), whose sum is σ = 7038092160. Its totient is φ = 2090081280.

The previous prime is 4155521479. The next prime is 4155521537. The reversal of 4155521505 is 5051255514.

It is not a de Polignac number, because 4155521505 - 2¹⁵ = 4155488737 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92376 + ... + 129785.

It is an arithmetic number, because the mean of its divisors is an integer number (219940380).

Almost surely, 2^4155521505 is an apocalyptic number.

It is an amenable number.

4155521505 is a deficient number, since it is larger than the sum of its proper divisors (2882570655).

4155521505 is a wasteful number, since it uses less digits than its factorization.

4155521505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222241.

The product of its (nonzero) digits is 25000, while the sum is 33.

The square root of 4155521505 is about 64463.3345786580. The cubic root of 4155521505 is about 1607.7129551702.

The spelling of 4155521505 in words is "four billion, one hundred fifty-five million, five hundred twenty-one thousand, five hundred five".