53720554 has 8 divisors (see below), whose sum is σ = 81684900. Its totient is φ = 26492256.

The previous prime is 53720531. The next prime is 53720567. The reversal of 53720554 is 45502735.

It can be written as a sum of positive squares in 2 ways, for example, as 50908225 + 2812329 = 7135^2 + 1677^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183829 + ... + 184120.

Almost surely, 2^53720554 is an apocalyptic number.

53720554 is a deficient number, since it is larger than the sum of its proper divisors (27964346).

53720554 is a wasteful number, since it uses less digits than its factorization.

53720554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368024.

The product of its (nonzero) digits is 21000, while the sum is 31.

The square root of 53720554 is about 7329.4306736608. The cubic root of 53720554 is about 377.3231872297.

The spelling of 53720554 in words is "fifty-three million, seven hundred twenty thousand, five hundred fifty-four".