53556947 has 4 divisors (see below), whose sum is σ = 54863256. Its totient is φ = 52250640.

The previous prime is 53556941. The next prime is 53556959. The reversal of 53556947 is 74965535.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74965535 = 5 ⋅14993107.

It is a cyclic number.

It is not a de Polignac number, because 53556947 - 2⁴ = 53556931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53556898 and 53556907.

It is not an unprimeable number, because it can be changed into a prime (53556941) 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, 653093 + ... + 653174.

It is an arithmetic number, because the mean of its divisors is an integer number (13715814).

Almost surely, 2^53556947 is an apocalyptic number.

53556947 is a deficient number, since it is larger than the sum of its proper divisors (1306309).

53556947 is a wasteful number, since it uses less digits than its factorization.

53556947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306308.

The product of its digits is 567000, while the sum is 44.

The square root of 53556947 is about 7318.2612005858. The cubic root of 53556947 is about 376.9397493229.

The spelling of 53556947 in words is "fifty-three million, five hundred fifty-six thousand, nine hundred forty-seven".