2478520101 has 4 divisors (see below), whose sum is σ = 3304693472. Its totient is φ = 1652346732.

The previous prime is 2478520081. The next prime is 2478520127. The reversal of 2478520101 is 1010258742.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2478520101 - 2¹⁷ = 2478389029 is a prime.

It is a super-2 number, since 2×2478520101² = 12286123782122100402, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2478520141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413086681 + ... + 413086686.

It is an arithmetic number, because the mean of its divisors is an integer number (826173368).

Almost surely, 2^2478520101 is an apocalyptic number.

It is an amenable number.

2478520101 is a deficient number, since it is larger than the sum of its proper divisors (826173371).

2478520101 is an equidigital number, since it uses as much as digits as its factorization.

2478520101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826173370.

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 2478520101 is about 49784.7376311255. The cubic root of 2478520101 is about 1353.3105947077.

Adding to 2478520101 its reverse (1010258742), we get a palindrome (3488778843).

The spelling of 2478520101 in words is "two billion, four hundred seventy-eight million, five hundred twenty thousand, one hundred one".