52406981 has 16 divisors (see below), whose sum is σ = 59133888. Its totient is φ = 46032000.

The previous prime is 52406969. The next prime is 52406987. The reversal of 52406981 is 18960425.

52406981 = T₂₁₄ + T₂₁₅ + ... + T₆₈₆.

It is a cyclic number.

It is not a de Polignac number, because 52406981 - 2⁶ = 52406917 is a prime.

It is a super-2 number, since 2×52406981² = 5492983315068722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52406987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47225 + ... + 48321.

It is an arithmetic number, because the mean of its divisors is an integer number (3695868).

Almost surely, 2^52406981 is an apocalyptic number.

It is an amenable number.

52406981 is a deficient number, since it is larger than the sum of its proper divisors (6726907).

52406981 is a wasteful number, since it uses less digits than its factorization.

52406981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 52406981 is about 7239.2666065010. The cubic root of 52406981 is about 374.2223434117. Note that the first 3 decimals are identical.

It can be divided in two parts, 5240 and 6981, that added together give a palindrome (12221).

The spelling of 52406981 in words is "fifty-two million, four hundred six thousand, nine hundred eighty-one".