55357251 has 8 divisors (see below), whose sum is σ = 77018880. Its totient is φ = 35300232.

The previous prime is 55357243. The next prime is 55357261. The reversal of 55357251 is 15275355.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55357251 - 2³ = 55357243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55357261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401071 + ... + 401208.

It is an arithmetic number, because the mean of its divisors is an integer number (9627360).

Almost surely, 2^55357251 is an apocalyptic number.

55357251 is a deficient number, since it is larger than the sum of its proper divisors (21661629).

55357251 is a wasteful number, since it uses less digits than its factorization.

55357251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802305.

The product of its digits is 26250, while the sum is 33.

The square root of 55357251 is about 7440.2453588575. The cubic root of 55357251 is about 381.1168688260.

The spelling of 55357251 in words is "fifty-five million, three hundred fifty-seven thousand, two hundred fifty-one".