55261907 has 4 divisors (see below), whose sum is σ = 57167520. Its totient is φ = 53356296.

The previous prime is 55261903. The next prime is 55261919. The reversal of 55261907 is 70916255.

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

It is a cyclic number.

It is not a de Polignac number, because 55261907 - 2² = 55261903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55261903) 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, 952763 + ... + 952820.

It is an arithmetic number, because the mean of its divisors is an integer number (14291880).

Almost surely, 2^55261907 is an apocalyptic number.

55261907 is a deficient number, since it is larger than the sum of its proper divisors (1905613).

55261907 is a wasteful number, since it uses less digits than its factorization.

55261907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1905612.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 55261907 is about 7433.8352820062. The cubic root of 55261907 is about 380.8979388289.

The spelling of 55261907 in words is "fifty-five million, two hundred sixty-one thousand, nine hundred seven".