55750007 has 4 divisors (see below), whose sum is σ = 55766520. Its totient is φ = 55733496.

The previous prime is 55749937. The next prime is 55750033. The reversal of 55750007 is 70005755.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70005755 = 5 ⋅14001151.

It is a cyclic number.

It is not a de Polignac number, because 55750007 - 2⁸ = 55749751 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 (55750067) 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, 1157 + ... + 10622.

It is an arithmetic number, because the mean of its divisors is an integer number (13941630).

Almost surely, 2^55750007 is an apocalyptic number.

55750007 is a deficient number, since it is larger than the sum of its proper divisors (16513).

55750007 is a wasteful number, since it uses less digits than its factorization.

55750007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16512.

The product of its (nonzero) digits is 6125, while the sum is 29.

The square root of 55750007 is about 7466.5927302887. The cubic root of 55750007 is about 382.0160784695.

The spelling of 55750007 in words is "fifty-five million, seven hundred fifty thousand, seven".