55137235 has 4 divisors (see below), whose sum is σ = 66164688. Its totient is φ = 44109784.

The previous prime is 55137217. The next prime is 55137253. The reversal of 55137235 is 53273155.

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

It is an interprime number because it is at equal distance from previous prime (55137217) and next prime (55137253).

It is a cyclic number.

It is not a de Polignac number, because 55137235 - 2¹¹ = 55135187 is a prime.

It is a super-2 number, since 2×55137235² = 6080229366890450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55137197 and 55137206.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5513719 + ... + 5513728.

It is an arithmetic number, because the mean of its divisors is an integer number (16541172).

Almost surely, 2^55137235 is an apocalyptic number.

55137235 is a deficient number, since it is larger than the sum of its proper divisors (11027453).

55137235 is a wasteful number, since it uses less digits than its factorization.

55137235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11027452.

The product of its digits is 15750, while the sum is 31.

The square root of 55137235 is about 7425.4451045038. The cubic root of 55137235 is about 380.6112852911.

The spelling of 55137235 in words is "fifty-five million, one hundred thirty-seven thousand, two hundred thirty-five".