53645949 has 32 divisors (see below), whose sum is σ = 95616000. Its totient is φ = 29039472.

The previous prime is 53645939. The next prime is 53645953. The reversal of 53645949 is 94954635.

53645949 is a `hidden beast` number, since 53 + 6 + 4 + 594 + 9 = 666.

It is not a de Polignac number, because 53645949 - 2¹² = 53641853 is a prime.

It is a super-2 number, since 2×53645949² = 5755775688221202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53645929) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3879 + ... + 11060.

It is an arithmetic number, because the mean of its divisors is an integer number (2988000).

Almost surely, 2^53645949 is an apocalyptic number.

It is an amenable number.

53645949 is a deficient number, since it is larger than the sum of its proper divisors (41970051).

53645949 is a wasteful number, since it uses less digits than its factorization.

53645949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14974 (or 14968 counting only the distinct ones).

The product of its digits is 583200, while the sum is 45.

The square root of 53645949 is about 7324.3394924048. The cubic root of 53645949 is about 377.1484357572.

The spelling of 53645949 in words is "fifty-three million, six hundred forty-five thousand, nine hundred forty-nine".