53401646 has 4 divisors (see below), whose sum is σ = 80102472. Its totient is φ = 26700822.

The previous prime is 53401637. The next prime is 53401669. The reversal of 53401646 is 64610435.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64610435 = 5 ⋅12922087.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13350410 + ... + 13350413.

It is an arithmetic number, because the mean of its divisors is an integer number (20025618).

Almost surely, 2^53401646 is an apocalyptic number.

53401646 is a deficient number, since it is larger than the sum of its proper divisors (26700826).

53401646 is a wasteful number, since it uses less digits than its factorization.

53401646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26700825.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 53401646 is about 7307.6429852587. The cubic root of 53401646 is about 376.5750546861.

The spelling of 53401646 in words is "fifty-three million, four hundred one thousand, six hundred forty-six".