61087158 has 24 divisors (see below), whose sum is σ = 144388296. Its totient is φ = 18511200.

The previous prime is 61087157. The next prime is 61087163. The reversal of 61087158 is 85178016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61087153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154063 + ... + 154458.

It is an arithmetic number, because the mean of its divisors is an integer number (6016179).

Almost surely, 2^61087158 is an apocalyptic number.

61087158 is an abundant number, since it is smaller than the sum of its proper divisors (83301138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61087158 is a wasteful number, since it uses less digits than its factorization.

61087158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308540 (or 308537 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The square root of 61087158 is about 7815.8274034167. The cubic root of 61087158 is about 393.8371139075.

The spelling of 61087158 in words is "sixty-one million, eighty-seven thousand, one hundred fifty-eight".