53401406 has 16 divisors (see below), whose sum is σ = 82874880. Its totient is φ = 25780440.

The previous prime is 53401373. The next prime is 53401409. The reversal of 53401406 is 60410435.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53401409) 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 7 ways as a sum of consecutive naturals, for example, 40205 + ... + 41511.

It is an arithmetic number, because the mean of its divisors is an integer number (5179680).

Almost surely, 2^53401406 is an apocalyptic number.

53401406 is a deficient number, since it is larger than the sum of its proper divisors (29473474).

53401406 is a wasteful number, since it uses less digits than its factorization.

53401406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 53401406 is about 7307.6265640767. The cubic root of 53401406 is about 376.5744905452.

The spelling of 53401406 in words is "fifty-three million, four hundred one thousand, four hundred six".