53780045 has 8 divisors (see below), whose sum is σ = 70403040. Its totient is φ = 39112720.

The previous prime is 53780039. The next prime is 53780059. The reversal of 53780045 is 54008735.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-53780045 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53779993 and 53780020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 488855 + ... + 488964.

It is an arithmetic number, because the mean of its divisors is an integer number (8800380).

Almost surely, 2^53780045 is an apocalyptic number.

53780045 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

53780045 is a deficient number, since it is larger than the sum of its proper divisors (16622995).

53780045 is a wasteful number, since it uses less digits than its factorization.

53780045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977835.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 53780045 is about 7333.4879150374. The cubic root of 53780045 is about 377.4624204218.

The spelling of 53780045 in words is "fifty-three million, seven hundred eighty thousand, forty-five".