55241157 has 4 divisors (see below), whose sum is σ = 73654880. Its totient is φ = 36827436.

The previous prime is 55241141. The next prime is 55241167. The reversal of 55241157 is 75114255.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 55241157 - 2⁴ = 55241141 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 (55241107) 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, 9206857 + ... + 9206862.

It is an arithmetic number, because the mean of its divisors is an integer number (18413720).

Almost surely, 2^55241157 is an apocalyptic number.

It is an amenable number.

55241157 is a deficient number, since it is larger than the sum of its proper divisors (18413723).

55241157 is a wasteful number, since it uses less digits than its factorization.

55241157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18413722.

The product of its digits is 7000, while the sum is 30.

The square root of 55241157 is about 7432.4395053038. The cubic root of 55241157 is about 380.8502590793.

The spelling of 55241157 in words is "fifty-five million, two hundred forty-one thousand, one hundred fifty-seven".