53640955 has 4 divisors (see below), whose sum is σ = 64369152. Its totient is φ = 42912760.

The previous prime is 53640949. The next prime is 53640973. The reversal of 53640955 is 55904635.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55904635 = 5 ⋅11180927.

It is not a de Polignac number, because 53640955 - 2⁷ = 53640827 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5364091 + ... + 5364100.

It is an arithmetic number, because the mean of its divisors is an integer number (16092288).

Almost surely, 2^53640955 is an apocalyptic number.

53640955 is a deficient number, since it is larger than the sum of its proper divisors (10728197).

53640955 is a wasteful number, since it uses less digits than its factorization.

53640955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10728196.

The product of its (nonzero) digits is 81000, while the sum is 37.

The square root of 53640955 is about 7323.9985663570. The cubic root of 53640955 is about 377.1367322470.

The spelling of 53640955 in words is "fifty-three million, six hundred forty thousand, nine hundred fifty-five".