53780001 has 32 divisors (see below), whose sum is σ = 80777088. Its totient is φ = 31549440.

The previous prime is 53779997. The next prime is 53780033. The reversal of 53780001 is 10008735.

53780001 = T₁₃₉₈ + T₁₃₉₉ + ... + T₁₄₅₀.

It is not a de Polignac number, because 53780001 - 2² = 53779997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53780201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 169495 + ... + 169811.

It is an arithmetic number, because the mean of its divisors is an integer number (2524284).

Almost surely, 2^53780001 is an apocalyptic number.

It is an amenable number.

53780001 is a deficient number, since it is larger than the sum of its proper divisors (26997087).

53780001 is a wasteful number, since it uses less digits than its factorization.

53780001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 53780001 is about 7333.4849151001. The cubic root of 53780001 is about 377.4623174818.

Adding to 53780001 its reverse (10008735), we get a palindrome (63788736).

The spelling of 53780001 in words is "fifty-three million, seven hundred eighty thousand, one".