53402478 has 8 divisors (see below), whose sum is σ = 106804968. Its totient is φ = 17800824.

The previous prime is 53402471. The next prime is 53402501. The reversal of 53402478 is 87420435.

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

53402478 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53402471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4450201 + ... + 4450212.

It is an arithmetic number, because the mean of its divisors is an integer number (13350621).

Almost surely, 2^53402478 is an apocalyptic number.

53402478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53402478 is a wasteful number, since it uses less digits than its factorization.

53402478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8900418.

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 53402478 is about 7307.6999117369. The cubic root of 53402478 is about 376.5770103612.

The spelling of 53402478 in words is "fifty-three million, four hundred two thousand, four hundred seventy-eight".