55270739 has 4 divisors (see below), whose sum is σ = 55777920. Its totient is φ = 54763560.

The previous prime is 55270717. The next prime is 55270741. The reversal of 55270739 is 93707255.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55270739 is a prime.

It is a super-2 number, since 2×55270739² = 6109709179212242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55270139) 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, 253427 + ... + 253644.

It is an arithmetic number, because the mean of its divisors is an integer number (13944480).

Almost surely, 2^55270739 is an apocalyptic number.

55270739 is a deficient number, since it is larger than the sum of its proper divisors (507181).

55270739 is a wasteful number, since it uses less digits than its factorization.

55270739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507180.

The product of its (nonzero) digits is 66150, while the sum is 38.

The square root of 55270739 is about 7434.4292988769. The cubic root of 55270739 is about 380.9182295474.

The spelling of 55270739 in words is "fifty-five million, two hundred seventy thousand, seven hundred thirty-nine".