2499998061 has 24 divisors (see below), whose sum is σ = 3667297312. Its totient is φ = 1513749600.

The previous prime is 2499998051. The next prime is 2499998071. The reversal of 2499998061 is 1608999942.

It is an interprime number because it is at equal distance from previous prime (2499998051) and next prime (2499998071).

It is not a de Polignac number, because 2499998061 - 2⁷ = 2499997933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2499997992 and 2499998010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2499998021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 498810 + ... + 503796.

Almost surely, 2^2499998061 is an apocalyptic number.

It is an amenable number.

2499998061 is a deficient number, since it is larger than the sum of its proper divisors (1167299251).

2499998061 is a wasteful number, since it uses less digits than its factorization.

2499998061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6393 (or 6382 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 57.

The square root of 2499998061 is about 49999.9806099962. The cubic root of 2499998061 is about 1357.2084574136.

The spelling of 2499998061 in words is "two billion, four hundred ninety-nine million, nine hundred ninety-eight thousand, sixty-one".