72050651 has 4 divisors (see below), whose sum is σ = 75183312. Its totient is φ = 68917992.

The previous prime is 72050639. The next prime is 72050659. The reversal of 72050651 is 15605027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15605027 = 239 ⋅65293.

It is a cyclic number.

It is not a de Polignac number, because 72050651 - 2²⁶ = 4941787 is a prime.

It is a super-3 number, since 3×72050651³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72050651.

It is not an unprimeable number, because it can be changed into a prime (72050659) 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, 1566296 + ... + 1566341.

It is an arithmetic number, because the mean of its divisors is an integer number (18795828).

Almost surely, 2^72050651 is an apocalyptic number.

72050651 is a deficient number, since it is larger than the sum of its proper divisors (3132661).

72050651 is a wasteful number, since it uses less digits than its factorization.

72050651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3132660.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 72050651 is about 8488.2654883080. The cubic root of 72050651 is about 416.1142957487.

Adding to 72050651 its reverse (15605027), we get a palindrome (87655678).

The spelling of 72050651 in words is "seventy-two million, fifty thousand, six hundred fifty-one".