72191495 has 8 divisors (see below), whose sum is σ = 87923184. Its totient is φ = 56890944.

The previous prime is 72191479. The next prime is 72191513. The reversal of 72191495 is 59419127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72191495 - 2⁴ = 72191479 is a prime.

It is a super-2 number, since 2×72191495² = 10423223900670050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107414 + ... + 108083.

It is an arithmetic number, because the mean of its divisors is an integer number (10990398).

Almost surely, 2^72191495 is an apocalyptic number.

72191495 is a deficient number, since it is larger than the sum of its proper divisors (15731689).

72191495 is a wasteful number, since it uses less digits than its factorization.

72191495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215569.

The product of its digits is 22680, while the sum is 38.

The square root of 72191495 is about 8496.5578324401. The cubic root of 72191495 is about 416.3852581628.

The spelling of 72191495 in words is "seventy-two million, one hundred ninety-one thousand, four hundred ninety-five".