946972553 has 4 divisors (see below), whose sum is σ = 947249940. Its totient is φ = 946695168.

The previous prime is 946972547. The next prime is 946972567. The reversal of 946972553 is 355279649.

It is a happy number.

946972553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 355279649 = 487 ⋅729527.

It can be written as a sum of positive squares in 2 ways, for example, as 494261824 + 452710729 = 22232^2 + 21277^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-946972553 is a prime.

It is a super-2 number, since 2×946972553² = 1793514032270675618, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (946972513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133508 + ... + 140421.

It is an arithmetic number, because the mean of its divisors is an integer number (236812485).

Almost surely, 2^946972553 is an apocalyptic number.

It is an amenable number.

946972553 is a deficient number, since it is larger than the sum of its proper divisors (277387).

946972553 is a wasteful number, since it uses less digits than its factorization.

946972553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277386.

The product of its digits is 2041200, while the sum is 50.

The square root of 946972553 is about 30772.9191497979. The cubic root of 946972553 is about 982.0022070679.

The spelling of 946972553 in words is "nine hundred forty-six million, nine hundred seventy-two thousand, five hundred fifty-three".