53650644 has 24 divisors (see below), whose sum is σ = 125620320. Its totient is φ = 17821344.

The previous prime is 53650631. The next prime is 53650741. The reversal of 53650644 is 44605635.

It is a super-2 number, since 2×53650644² = 5756783203229472, 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 7 ways as a sum of consecutive naturals, for example, 4114 + ... + 11145.

It is an arithmetic number, because the mean of its divisors is an integer number (5234180).

Almost surely, 2^53650644 is an apocalyptic number.

It is an amenable number.

53650644 is an abundant number, since it is smaller than the sum of its proper divisors (71969676).

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

53650644 is a wasteful number, since it uses less digits than its factorization.

53650644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15559 (or 15557 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 53650644 is about 7324.6599921088. The cubic root of 53650644 is about 377.1594378943.

The spelling of 53650644 in words is "fifty-three million, six hundred fifty thousand, six hundred forty-four".