52649040 has 40 divisors (see below), whose sum is σ = 163212768. Its totient is φ = 14039680.

The previous prime is 52649021. The next prime is 52649053. The reversal of 52649040 is 4094625.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 52648989 and 52649007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109446 + ... + 109925.

Almost surely, 2^52649040 is an apocalyptic number.

It is an amenable number.

52649040 is an abundant number, since it is smaller than the sum of its proper divisors (110563728).

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

52649040 is a wasteful number, since it uses less digits than its factorization.

52649040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219387 (or 219381 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 52649040 is about 7255.9658213087. The cubic root of 52649040 is about 374.7976152385.

The spelling of 52649040 in words is "fifty-two million, six hundred forty-nine thousand, forty".