55257601 has 4 divisors (see below), whose sum is σ = 63151552. Its totient is φ = 47363652.

The previous prime is 55257589. The next prime is 55257611. The reversal of 55257601 is 10675255.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10675255 = 5 ⋅2135051.

It is not a de Polignac number, because 55257601 - 2⁷ = 55257473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55257611) 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, 3946965 + ... + 3946978.

It is an arithmetic number, because the mean of its divisors is an integer number (15787888).

Almost surely, 2^55257601 is an apocalyptic number.

It is an amenable number.

55257601 is a deficient number, since it is larger than the sum of its proper divisors (7893951).

55257601 is an equidigital number, since it uses as much as digits as its factorization.

55257601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7893950.

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 55257601 is about 7433.5456546657. The cubic root of 55257601 is about 380.8880454007. Note that the first 3 decimals are identical.

The spelling of 55257601 in words is "fifty-five million, two hundred fifty-seven thousand, six hundred one".