53529978 has 8 divisors (see below), whose sum is σ = 107059968. Its totient is φ = 17843324.

The previous prime is 53529977. The next prime is 53529989. The reversal of 53529978 is 87992535.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

53529978 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (53529977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4460826 + ... + 4460837.

It is an arithmetic number, because the mean of its divisors is an integer number (13382496).

Almost surely, 2^53529978 is an apocalyptic number.

53529978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

53529978 is a wasteful number, since it uses less digits than its factorization.

53529978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8921668.

The product of its digits is 680400, while the sum is 48.

The square root of 53529978 is about 7316.4183860684. The cubic root of 53529978 is about 376.8764684260.

The spelling of 53529978 in words is "fifty-three million, five hundred twenty-nine thousand, nine hundred seventy-eight".