53688629 has 4 divisors (see below), whose sum is σ = 54701676. Its totient is φ = 52675584.

The previous prime is 53688619. The next prime is 53688659. The reversal of 53688629 is 92688635.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32547025 + 21141604 = 5705^2 + 4598^2 .

It is a cyclic number.

It is not a de Polignac number, because 53688629 - 2¹⁶ = 53623093 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 (53688619) 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, 506444 + ... + 506549.

It is an arithmetic number, because the mean of its divisors is an integer number (13675419).

Almost surely, 2^53688629 is an apocalyptic number.

It is an amenable number.

53688629 is a deficient number, since it is larger than the sum of its proper divisors (1013047).

53688629 is a wasteful number, since it uses less digits than its factorization.

53688629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013046.

The product of its digits is 622080, while the sum is 47.

The square root of 53688629 is about 7327.2524864372. The cubic root of 53688629 is about 377.2484273294.

The spelling of 53688629 in words is "fifty-three million, six hundred eighty-eight thousand, six hundred twenty-nine".