7507447057 has 6 divisors (see below), whose sum is σ = 8251987394. Its totient is φ = 6824951760.

The previous prime is 7507447039. The next prime is 7507447063.

7507447057 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 6455158336 + 1052288721 = 80344^2 + 32439^2 .

It is not a de Polignac number, because 7507447057 - 2⁷ = 7507446929 is a prime.

It is a super-2 number, since 2×7507447057² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7507446998 and 7507447016.

It is not an unprimeable number, because it can be changed into a prime (7507447097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31022388 + ... + 31022629.

Almost surely, 2^7507447057 is an apocalyptic number.

It is an amenable number.

7507447057 is a deficient number, since it is larger than the sum of its proper divisors (744540337).

7507447057 is a wasteful number, since it uses less digits than its factorization.

7507447057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62045039 (or 62045028 counting only the distinct ones).

The product of its (nonzero) digits is 960400, while the sum is 46.

The square root of 7507447057 is about 86645.5253143519. The cubic root of 7507447057 is about 1958.0814783247.

The spelling of 7507447057 in words is "seven billion, five hundred seven million, four hundred forty-seven thousand, fifty-seven".