53781007 has 8 divisors (see below), whose sum is σ = 61515776. Its totient is φ = 46059192.

The previous prime is 53780999. The next prime is 53781011. The reversal of 53781007 is 70018735.

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

It is a cyclic number.

It is not a de Polignac number, because 53781007 - 2³ = 53780999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53781007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53781097) 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, 8518 + ... + 13420.

It is an arithmetic number, because the mean of its divisors is an integer number (7689472).

Almost surely, 2^53781007 is an apocalyptic number.

53781007 is a deficient number, since it is larger than the sum of its proper divisors (7734769).

53781007 is a wasteful number, since it uses less digits than its factorization.

53781007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6477.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 53781007 is about 7333.5535042706. The cubic root of 53781007 is about 377.4646710502.

The spelling of 53781007 in words is "fifty-three million, seven hundred eighty-one thousand, seven".