52780454 has 8 divisors (see below), whose sum is σ = 79220568. Its totient is φ = 26373600.

The previous prime is 52780391. The next prime is 52780457. The reversal of 52780454 is 45408725.

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

It is a super-2 number, since 2×52780454² = 5571552648892232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52780457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3872 + ... + 10979.

It is an arithmetic number, because the mean of its divisors is an integer number (9902571).

Almost surely, 2^52780454 is an apocalyptic number.

52780454 is a deficient number, since it is larger than the sum of its proper divisors (26440114).

52780454 is a wasteful number, since it uses less digits than its factorization.

52780454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16630.

The product of its (nonzero) digits is 44800, while the sum is 35.

The square root of 52780454 is about 7265.0157604784. The cubic root of 52780454 is about 375.1091924985.

The spelling of 52780454 in words is "fifty-two million, seven hundred eighty thousand, four hundred fifty-four".