53555370 has 32 divisors (see below), whose sum is σ = 140218560. Its totient is φ = 12983040.

The previous prime is 53555309. The next prime is 53555401. The reversal of 53555370 is 7355535.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon 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 15 ways as a sum of consecutive naturals, for example, 80815 + ... + 81474.

It is an arithmetic number, because the mean of its divisors is an integer number (4381830).

Almost surely, 2^53555370 is an apocalyptic number.

53555370 is an abundant number, since it is smaller than the sum of its proper divisors (86663190).

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

53555370 is a wasteful number, since it uses less digits than its factorization.

53555370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162310.

The product of its (nonzero) digits is 39375, while the sum is 33.

The square root of 53555370 is about 7318.1534556198. The cubic root of 53555370 is about 376.9360495861.

The spelling of 53555370 in words is "fifty-three million, five hundred fifty-five thousand, three hundred seventy".