60551591 has 4 divisors (see below), whose sum is σ = 60608184. Its totient is φ = 60495000.

The previous prime is 60551581. The next prime is 60551609. The reversal of 60551591 is 19515506.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19515506 = 2 ⋅9757753.

It is a cyclic number.

It is not a de Polignac number, because 60551591 - 2¹⁴ = 60535207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60551531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26660 + ... + 28841.

It is an arithmetic number, because the mean of its divisors is an integer number (15152046).

Almost surely, 2^60551591 is an apocalyptic number.

60551591 is a deficient number, since it is larger than the sum of its proper divisors (56593).

60551591 is a wasteful number, since it uses less digits than its factorization.

60551591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56592.

The product of its (nonzero) digits is 6750, while the sum is 32.

The square root of 60551591 is about 7781.4902814307. The cubic root of 60551591 is about 392.6827763818.

The spelling of 60551591 in words is "sixty million, five hundred fifty-one thousand, five hundred ninety-one".