53957947 has 4 divisors (see below), whose sum is σ = 53972920. Its totient is φ = 53942976.

The previous prime is 53957923. The next prime is 53957957. The reversal of 53957947 is 74975935.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 74975935 = 5 ⋅14995187.

It is a cyclic number.

It is not a de Polignac number, because 53957947 - 2¹¹ = 53955899 is a prime.

It is a super-2 number, since 2×53957947² = 5822920088909618, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53957947.

It is not an unprimeable number, because it can be changed into a prime (53957957) 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, 1579 + ... + 10507.

It is an arithmetic number, because the mean of its divisors is an integer number (13493230).

Almost surely, 2^53957947 is an apocalyptic number.

53957947 is a deficient number, since it is larger than the sum of its proper divisors (14973).

53957947 is an equidigital number, since it uses as much as digits as its factorization.

53957947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14972.

The product of its digits is 1190700, while the sum is 49.

The square root of 53957947 is about 7345.6073268315. The cubic root of 53957947 is about 377.8781719691.

The spelling of 53957947 in words is "fifty-three million, nine hundred fifty-seven thousand, nine hundred forty-seven".