7491075601 has 9 divisors (see below), whose sum is σ = 7681880059. Its totient is φ = 7304904400.

The previous prime is 7491075547. The next prime is 7491075677. The reversal of 7491075601 is 1065701947.

The square root of 7491075601 is 86551.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 360962001 + 7130113600 = 18999^2 + 84440^2 .

It is a de Polignac number, because none of the positive numbers 2^k-7491075601 is a prime.

It is a super-2 number, since 2×7491075601² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7491075001) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3547536 + ... + 3549646.

Almost surely, 2^7491075601 is an apocalyptic number.

7491075601 is the 86551-st square number.

7491075601 is the 43276-th centered octagonal number.

It is an amenable number.

7491075601 is a deficient number, since it is larger than the sum of its proper divisors (190804458).

7491075601 is an frugal number, since it uses more digits than its factorization.

7491075601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4304 (or 2152 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 40.

The cubic root of 7491075601 is about 1956.6571159672.

The spelling of 7491075601 in words is "seven billion, four hundred ninety-one million, seventy-five thousand, six hundred one".