53969787 has 8 divisors (see below), whose sum is σ = 79955280. Its totient is φ = 35979840.

The previous prime is 53969761. The next prime is 53969801. The reversal of 53969787 is 78796935.

It is not a de Polignac number, because 53969787 - 2¹⁵ = 53937019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53969287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 999414 + ... + 999467.

It is an arithmetic number, because the mean of its divisors is an integer number (9994410).

Almost surely, 2^53969787 is an apocalyptic number.

53969787 is a deficient number, since it is larger than the sum of its proper divisors (25985493).

53969787 is a wasteful number, since it uses less digits than its factorization.

53969787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998890 (or 1998884 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 53969787 is about 7346.4132064566. The cubic root of 53969787 is about 377.9058092348.

It can be divided in two parts, 53969 and 787, that added together give a square (54756 = 234²).

The spelling of 53969787 in words is "fifty-three million, nine hundred sixty-nine thousand, seven hundred eighty-seven".