53681655 has 16 divisors (see below), whose sum is σ = 89625600. Its totient is φ = 27385248.

The previous prime is 53681653. The next prime is 53681657. The reversal of 53681655 is 55618635.

It is an interprime number because it is at equal distance from previous prime (53681653) and next prime (53681657).

It is not a de Polignac number, because 53681655 - 2¹ = 53681653 is a prime.

It is a super-3 number, since 3×53681655³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53681651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77455 + ... + 78144.

It is an arithmetic number, because the mean of its divisors is an integer number (5601600).

Almost surely, 2^53681655 is an apocalyptic number.

53681655 is a deficient number, since it is larger than the sum of its proper divisors (35943945).

53681655 is a wasteful number, since it uses less digits than its factorization.

53681655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155630.

The product of its digits is 108000, while the sum is 39.

The square root of 53681655 is about 7326.7765763670. The cubic root of 53681655 is about 377.2320921234.

The spelling of 53681655 in words is "fifty-three million, six hundred eighty-one thousand, six hundred fifty-five".