53378040 has 32 divisors (see below), whose sum is σ = 160134480. Its totient is φ = 14234112.

The previous prime is 53378027. The next prime is 53378051. The reversal of 53378040 is 4087335.

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 = 53377989 and 53378007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222289 + ... + 222528.

Almost surely, 2^53378040 is an apocalyptic number.

It is an amenable number.

53378040 is an abundant number, since it is smaller than the sum of its proper divisors (106756440).

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

53378040 is a wasteful number, since it uses less digits than its factorization.

53378040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444831 (or 444827 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 53378040 is about 7306.0276484558. The cubic root of 53378040 is about 376.5195586382.

The spelling of 53378040 in words is "fifty-three million, three hundred seventy-eight thousand, forty".