60881561 has 4 divisors (see below), whose sum is σ = 65564772. Its totient is φ = 56198352.

The previous prime is 60881537. The next prime is 60881563. The reversal of 60881561 is 16518806.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14899600 + 45981961 = 3860^2 + 6781^2 .

It is a cyclic number.

It is not a de Polignac number, because 60881561 - 2¹⁰ = 60880537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (60881563) 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, 2341586 + ... + 2341611.

It is an arithmetic number, because the mean of its divisors is an integer number (16391193).

Almost surely, 2^60881561 is an apocalyptic number.

It is an amenable number.

60881561 is a deficient number, since it is larger than the sum of its proper divisors (4683211).

60881561 is a wasteful number, since it uses less digits than its factorization.

60881561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4683210.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 60881561 is about 7802.6637118358. The cubic root of 60881561 is about 393.3947801318.

The spelling of 60881561 in words is "sixty million, eight hundred eighty-one thousand, five hundred sixty-one".