53780361 has 16 divisors (see below), whose sum is σ = 73592064. Its totient is φ = 34918784.

The previous prime is 53780357. The next prime is 53780369. The reversal of 53780361 is 16308735.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 53780361 - 2² = 53780357 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53780369) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32035 + ... + 33671.

It is an arithmetic number, because the mean of its divisors is an integer number (4599504).

Almost surely, 2^53780361 is an apocalyptic number.

It is an amenable number.

53780361 is a deficient number, since it is larger than the sum of its proper divisors (19811703).

53780361 is a wasteful number, since it uses less digits than its factorization.

53780361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 53780361 is about 7333.5094600062. The cubic root of 53780361 is about 377.4631597164.

The spelling of 53780361 in words is "fifty-three million, seven hundred eighty thousand, three hundred sixty-one".