72151141 has 4 divisors (see below), whose sum is σ = 72554400. Its totient is φ = 71747884.

The previous prime is 72151139. The next prime is 72151169. The reversal of 72151141 is 14115127.

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: 14115127 = 13 ⋅1085779.

It is a cyclic number.

It is not a de Polignac number, because 72151141 - 2¹ = 72151139 is a prime.

It is a super-3 number, since 3×72151141³ (a number of 25 digits) contains 333 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 (72151441) 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, 201361 + ... + 201718.

It is an arithmetic number, because the mean of its divisors is an integer number (18138600).

Almost surely, 2^72151141 is an apocalyptic number.

It is an amenable number.

72151141 is a deficient number, since it is larger than the sum of its proper divisors (403259).

72151141 is a wasteful number, since it uses less digits than its factorization.

72151141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403258.

The product of its digits is 280, while the sum is 22.

The square root of 72151141 is about 8494.1827741108. The cubic root of 72151141 is about 416.3076592595.

Adding to 72151141 its reverse (14115127), we get a palindrome (86266268).

The spelling of 72151141 in words is "seventy-two million, one hundred fifty-one thousand, one hundred forty-one".