72151351 has 4 divisors (see below), whose sum is σ = 72813400. Its totient is φ = 71489304.

The previous prime is 72151337. The next prime is 72151393. The reversal of 72151351 is 15315127.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15315127 = 3049 ⋅5023.

It is a cyclic number.

It is not a de Polignac number, because 72151351 - 2¹⁵ = 72118583 is a prime.

It is a super-2 number, since 2×72151351² = 10411634902250402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72151301) 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, 330861 + ... + 331078.

It is an arithmetic number, because the mean of its divisors is an integer number (18203350).

Almost surely, 2^72151351 is an apocalyptic number.

72151351 is a deficient number, since it is larger than the sum of its proper divisors (662049).

72151351 is a wasteful number, since it uses less digits than its factorization.

72151351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662048.

The product of its digits is 1050, while the sum is 25.

The square root of 72151351 is about 8494.1951355028. The cubic root of 72151351 is about 416.3080631548.

Adding to 72151351 its reverse (15315127), we get a palindrome (87466478).

The spelling of 72151351 in words is "seventy-two million, one hundred fifty-one thousand, three hundred fifty-one".