60555551 has 4 divisors (see below), whose sum is σ = 69206352. Its totient is φ = 51904752.

The previous prime is 60555533. The next prime is 60555553. The reversal of 60555551 is 15555506.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15555506 = 2 ⋅7777753.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-60555551 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 (60555553) 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, 4325390 + ... + 4325403.

It is an arithmetic number, because the mean of its divisors is an integer number (17301588).

Almost surely, 2^60555551 is an apocalyptic number.

60555551 is a deficient number, since it is larger than the sum of its proper divisors (8650801).

60555551 is an equidigital number, since it uses as much as digits as its factorization.

60555551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8650800.

The product of its (nonzero) digits is 18750, while the sum is 32.

The square root of 60555551 is about 7781.7447272447. The cubic root of 60555551 is about 392.6913365197.

The spelling of 60555551 in words is "sixty million, five hundred fifty-five thousand, five hundred fifty-one".