54640007 has 2 divisors, whose sum is σ = 54640008. Its totient is φ = 54640006.

The previous prime is 54639997. The next prime is 54640021. The reversal of 54640007 is 70004645.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54640007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54648007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27320003 + 27320004.

It is an arithmetic number, because the mean of its divisors is an integer number (27320004).

Almost surely, 2^54640007 is an apocalyptic number.

54640007 is a deficient number, since it is larger than the sum of its proper divisors (1).

54640007 is an equidigital number, since it uses as much as digits as its factorization.

54640007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 54640007 is about 7391.8879185226. The cubic root of 54640007 is about 379.4637102553.

The spelling of 54640007 in words is "fifty-four million, six hundred forty thousand, seven".