2401556 has 12 divisors (see below), whose sum is σ = 4450068. Its totient is φ = 1130112.

The previous prime is 2401549. The next prime is 2401561. The reversal of 2401556 is 6551042.

It can be written as a sum of positive squares in 2 ways, for example, as 1562500 + 839056 = 1250^2 + 916^2 .

It is a super-2 number, since 2×2401556² = 11534942442272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17591 + ... + 17726.

It is an arithmetic number, because the mean of its divisors is an integer number (370839).

2^2401556 is an apocalyptic number.

It is an amenable number.

2401556 is a deficient number, since it is larger than the sum of its proper divisors (2048512).

2401556 is a wasteful number, since it uses less digits than its factorization.

2401556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35338 (or 35336 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2401556 is about 1549.6954539522. The cubic root of 2401556 is about 133.9155181454.

Adding to 2401556 its reverse (6551042), we get a palindrome (8952598).

The spelling of 2401556 in words is "two million, four hundred one thousand, five hundred fifty-six".