53157775 has 12 divisors (see below), whose sum is σ = 71908344. Its totient is φ = 38660000.

The previous prime is 53157773. The next prime is 53157787. The reversal of 53157775 is 57775135.

It is not a de Polignac number, because 53157775 - 2¹ = 53157773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53157773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96376 + ... + 96925.

It is an arithmetic number, because the mean of its divisors is an integer number (5992362).

Almost surely, 2^53157775 is an apocalyptic number.

53157775 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

53157775 is a deficient number, since it is larger than the sum of its proper divisors (18750569).

53157775 is a wasteful number, since it uses less digits than its factorization.

53157775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193322 (or 193317 counting only the distinct ones).

The product of its digits is 128625, while the sum is 40.

The square root of 53157775 is about 7290.9378683404. The cubic root of 53157775 is about 376.0009407514. Note that the first 3 decimals are identical.

The spelling of 53157775 in words is "fifty-three million, one hundred fifty-seven thousand, seven hundred seventy-five".