2520146906 has 4 divisors (see below), whose sum is σ = 3780220362. Its totient is φ = 1260073452.

The previous prime is 2520146897. The next prime is 2520146933. The reversal of 2520146906 is 6096410252.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2514119881 + 6027025 = 50141^2 + 2455^2 .

It is a super-2 number, since 2×2520146906² = 12702280855642745672, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630036725 + ... + 630036728.

Almost surely, 2^2520146906 is an apocalyptic number.

2520146906 is a deficient number, since it is larger than the sum of its proper divisors (1260073456).

2520146906 is a wasteful number, since it uses less digits than its factorization.

2520146906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260073455.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 2520146906 is about 50201.0647895042. The cubic root of 2520146906 is about 1360.8448661148.

The spelling of 2520146906 in words is "two billion, five hundred twenty million, one hundred forty-six thousand, nine hundred six".