60921577 has 4 divisors (see below), whose sum is σ = 61460820. Its totient is φ = 60382336.

The previous prime is 60921569. The next prime is 60921587. The reversal of 60921577 is 77512906.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77512906 = 2 ⋅38756453.

It can be written as a sum of positive squares in 2 ways, for example, as 12257001 + 48664576 = 3501^2 + 6976^2 .

It is a cyclic number.

It is not a de Polignac number, because 60921577 - 2³ = 60921569 is a prime.

It is a super-2 number, since 2×60921577² = 7422877088333858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (60921527) 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, 269452 + ... + 269677.

It is an arithmetic number, because the mean of its divisors is an integer number (15365205).

Almost surely, 2^60921577 is an apocalyptic number.

It is an amenable number.

60921577 is a deficient number, since it is larger than the sum of its proper divisors (539243).

60921577 is a wasteful number, since it uses less digits than its factorization.

60921577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539242.

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 60921577 is about 7805.2275431277. The cubic root of 60921577 is about 393.4809509283.

The spelling of 60921577 in words is "sixty million, nine hundred twenty-one thousand, five hundred seventy-seven".