61082157 has 4 divisors (see below), whose sum is σ = 81442880. Its totient is φ = 40721436.

The previous prime is 61082143. The next prime is 61082171. The reversal of 61082157 is 75128016.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (61082143) and next prime (61082171).

It is not a de Polignac number, because 61082157 - 2⁴ = 61082141 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 (61082117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10180357 + ... + 10180362.

It is an arithmetic number, because the mean of its divisors is an integer number (20360720).

Almost surely, 2^61082157 is an apocalyptic number.

It is an amenable number.

61082157 is a deficient number, since it is larger than the sum of its proper divisors (20360723).

61082157 is a wasteful number, since it uses less digits than its factorization.

61082157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20360722.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 61082157 is about 7815.5074691283. The cubic root of 61082157 is about 393.8263662413.

The spelling of 61082157 in words is "sixty-one million, eighty-two thousand, one hundred fifty-seven".