7201491 has 8 divisors (see below), whose sum is σ = 10474944. Its totient is φ = 4364520.

The previous prime is 7201457. The next prime is 7201499. The reversal of 7201491 is 1941027.

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

It is not a de Polignac number, because 7201491 - 2⁶ = 7201427 is a prime.

It is a super-2 number, since 2×7201491² = 103722945246162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7201499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109081 + ... + 109146.

It is an arithmetic number, because the mean of its divisors is an integer number (1309368).

Almost surely, 2^7201491 is an apocalyptic number.

7201491 is a deficient number, since it is larger than the sum of its proper divisors (3273453).

7201491 is a wasteful number, since it uses less digits than its factorization.

7201491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218241.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 7201491 is about 2683.5593900639. The cubic root of 7201491 is about 193.1112051185. Note that the first 3 decimals are identical.

It can be divided in two parts, 720 and 1491, that added together give a triangular number (2211 = T₆₆).

The spelling of 7201491 in words is "seven million, two hundred one thousand, four hundred ninety-one".