53691829 has 4 divisors (see below), whose sum is σ = 54601920. Its totient is φ = 52781740.

The previous prime is 53691811. The next prime is 53691839. The reversal of 53691829 is 92819635.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92819635 = 5 ⋅18563927.

It is a cyclic number.

It is not a de Polignac number, because 53691829 - 2¹¹ = 53689781 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 (53691839) 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, 454957 + ... + 455074.

It is an arithmetic number, because the mean of its divisors is an integer number (13650480).

Almost surely, 2^53691829 is an apocalyptic number.

53691829 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

It is an amenable number.

53691829 is a deficient number, since it is larger than the sum of its proper divisors (910091).

53691829 is an equidigital number, since it uses as much as digits as its factorization.

53691829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910090.

The product of its digits is 116640, while the sum is 43.

The square root of 53691829 is about 7327.4708460696. The cubic root of 53691829 is about 377.2559222187.

The spelling of 53691829 in words is "fifty-three million, six hundred ninety-one thousand, eight hundred twenty-nine".