55972135 has 8 divisors (see below), whose sum is σ = 68169456. Its totient is φ = 44109120.

The previous prime is 55972121. The next prime is 55972139. The reversal of 55972135 is 53127955.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-55972135 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55972094 and 55972103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55972139) 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, 83206 + ... + 83875.

It is an arithmetic number, because the mean of its divisors is an integer number (8521182).

Almost surely, 2^55972135 is an apocalyptic number.

55972135 is a deficient number, since it is larger than the sum of its proper divisors (12197321).

55972135 is a wasteful number, since it uses less digits than its factorization.

55972135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167153.

The product of its digits is 47250, while the sum is 37.

The square root of 55972135 is about 7481.4527332598. The cubic root of 55972135 is about 382.5227690890.

The spelling of 55972135 in words is "fifty-five million, nine hundred seventy-two thousand, one hundred thirty-five".