53978422 has 8 divisors (see below), whose sum is σ = 81436176. Its totient is φ = 26833032.

The previous prime is 53978413. The next prime is 53978437. The reversal of 53978422 is 22487935.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×53978422² = 5827340083220168, 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, 77658 + ... + 78349.

It is an arithmetic number, because the mean of its divisors is an integer number (10179522).

Almost surely, 2^53978422 is an apocalyptic number.

53978422 is a deficient number, since it is larger than the sum of its proper divisors (27457754).

53978422 is a wasteful number, since it uses less digits than its factorization.

53978422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156182.

The product of its digits is 120960, while the sum is 40.

The square root of 53978422 is about 7347.0008847148. Note that the first 3 decimals coincide. The cubic root of 53978422 is about 377.9259627492.

It can be divided in two parts, 539 and 78422, that added together give a square (78961 = 281²).

The spelling of 53978422 in words is "fifty-three million, nine hundred seventy-eight thousand, four hundred twenty-two".