55240351 has 4 divisors (see below), whose sum is σ = 55455552. Its totient is φ = 55025152.

The previous prime is 55240321. The next prime is 55240417. The reversal of 55240351 is 15304255.

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 55240351 - 2⁹ = 55239839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55240321) 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, 107215 + ... + 107728.

It is an arithmetic number, because the mean of its divisors is an integer number (13863888).

Almost surely, 2^55240351 is an apocalyptic number.

55240351 is a deficient number, since it is larger than the sum of its proper divisors (215201).

55240351 is a wasteful number, since it uses less digits than its factorization.

55240351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215200.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 55240351 is about 7432.3852833394. The cubic root of 55240351 is about 380.8484067961.

The spelling of 55240351 in words is "fifty-five million, two hundred forty thousand, three hundred fifty-one".