2520155 has 8 divisors (see below), whose sum is σ = 3299184. Its totient is φ = 1832800.

The previous prime is 2520151. The next prime is 2520169. The reversal of 2520155 is 5510252.

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

It is not a de Polignac number, because 2520155 - 2² = 2520151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2520151) 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, 22856 + ... + 22965.

It is an arithmetic number, because the mean of its divisors is an integer number (412398).

2^2520155 is an apocalyptic number.

2520155 is a deficient number, since it is larger than the sum of its proper divisors (779029).

2520155 is a wasteful number, since it uses less digits than its factorization.

2520155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45837.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 2520155 is about 1587.4996062992. The cubic root of 2520155 is about 136.0846322996.

The spelling of 2520155 in words is "two million, five hundred twenty thousand, one hundred fifty-five".