53535551 has 4 divisors (see below), whose sum is σ = 53895000. Its totient is φ = 53176104.

The previous prime is 53535541. The next prime is 53535563. The reversal of 53535551 is 15553535.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15553535 = 5 ⋅3110707.

It is a cyclic number.

It is not a de Polignac number, because 53535551 - 2⁶ = 53535487 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53535541) 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, 179501 + ... + 179798.

It is an arithmetic number, because the mean of its divisors is an integer number (13473750).

Almost surely, 2^53535551 is an apocalyptic number.

53535551 is a deficient number, since it is larger than the sum of its proper divisors (359449).

53535551 is a wasteful number, since it uses less digits than its factorization.

53535551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359448.

The product of its digits is 28125, while the sum is 32.

The square root of 53535551 is about 7316.7992319046. The cubic root of 53535551 is about 376.8895468278.

The spelling of 53535551 in words is "fifty-three million, five hundred thirty-five thousand, five hundred fifty-one".