72553342 has 4 divisors (see below), whose sum is σ = 108830016. Its totient is φ = 36276670.

The previous prime is 72553309. The next prime is 72553373. The reversal of 72553342 is 24335527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24335527 = 31 ⋅785017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18138334 + ... + 18138337.

It is an arithmetic number, because the mean of its divisors is an integer number (27207504).

Almost surely, 2^72553342 is an apocalyptic number.

72553342 is a deficient number, since it is larger than the sum of its proper divisors (36276674).

72553342 is a wasteful number, since it uses less digits than its factorization.

72553342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36276673.

The product of its digits is 25200, while the sum is 31.

The square root of 72553342 is about 8517.8249571120. The cubic root of 72553342 is about 417.0797846828.

Adding to 72553342 its reverse (24335527), we get a palindrome (96888869).

The spelling of 72553342 in words is "seventy-two million, five hundred fifty-three thousand, three hundred forty-two".