7375455621 has 8 divisors (see below), whose sum is σ = 10926600960. Its totient is φ = 4916970396.

The previous prime is 7375455599. The next prime is 7375455623. The reversal of 7375455621 is 1265545737.

It is a happy number.

7375455621 is a `hidden beast` number, since 7 + 3 + 75 + 4 + 556 + 21 = 666.

It is not a de Polignac number, because 7375455621 - 2¹⁷ = 7375324549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7375455623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136582485 + ... + 136582538.

It is an arithmetic number, because the mean of its divisors is an integer number (1365825120).

Almost surely, 2^7375455621 is an apocalyptic number.

It is an amenable number.

7375455621 is a deficient number, since it is larger than the sum of its proper divisors (3551145339).

7375455621 is a wasteful number, since it uses less digits than its factorization.

7375455621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273165032 (or 273165026 counting only the distinct ones).

The product of its digits is 882000, while the sum is 45.

The square root of 7375455621 is about 85880.4728736399. The cubic root of 7375455621 is about 1946.5382914258.

The spelling of 7375455621 in words is "seven billion, three hundred seventy-five million, four hundred fifty-five thousand, six hundred twenty-one".