72355853 has 4 divisors (see below), whose sum is σ = 72528960. Its totient is φ = 72182748.

The previous prime is 72355847. The next prime is 72355867. The reversal of 72355853 is 35855327.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35855327 = 2141 ⋅16747.

It is a cyclic number.

It is not a de Polignac number, because 72355853 - 2⁸ = 72355597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72355813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85925 + ... + 86762.

It is an arithmetic number, because the mean of its divisors is an integer number (18132240).

Almost surely, 2^72355853 is an apocalyptic number.

It is an amenable number.

72355853 is a deficient number, since it is larger than the sum of its proper divisors (173107).

72355853 is a wasteful number, since it uses less digits than its factorization.

72355853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173106.

The product of its digits is 126000, while the sum is 38.

The square root of 72355853 is about 8506.2243680731. The cubic root of 72355853 is about 416.7010127065.

The spelling of 72355853 in words is "seventy-two million, three hundred fifty-five thousand, eight hundred fifty-three".