72622153 has 4 divisors (see below), whose sum is σ = 73109700. Its totient is φ = 72134608.

The previous prime is 72622133. The next prime is 72622159. The reversal of 72622153 is 35122627.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35122627 = 157 ⋅223711.

It can be written as a sum of positive squares in 2 ways, for example, as 2866249 + 69755904 = 1693^2 + 8352^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72622153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72622159) 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, 243550 + ... + 243847.

It is an arithmetic number, because the mean of its divisors is an integer number (18277425).

Almost surely, 2^72622153 is an apocalyptic number.

It is an amenable number.

72622153 is a deficient number, since it is larger than the sum of its proper divisors (487547).

72622153 is a wasteful number, since it uses less digits than its factorization.

72622153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487546.

The product of its digits is 5040, while the sum is 28.

The square root of 72622153 is about 8521.8632352321. The cubic root of 72622153 is about 417.2115985453.

The spelling of 72622153 in words is "seventy-two million, six hundred twenty-two thousand, one hundred fifty-three".