61008157 has 4 divisors (see below), whose sum is σ = 69723616. Its totient is φ = 52292700.

The previous prime is 61008151. The next prime is 61008161. The reversal of 61008157 is 75180016.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 61008157 - 2³ = 61008149 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 (61008151) 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, 4357719 + ... + 4357732.

It is an arithmetic number, because the mean of its divisors is an integer number (17430904).

Almost surely, 2^61008157 is an apocalyptic number.

It is an amenable number.

61008157 is a deficient number, since it is larger than the sum of its proper divisors (8715459).

61008157 is an equidigital number, since it uses as much as digits as its factorization.

61008157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8715458.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 61008157 is about 7810.7718568654. The cubic root of 61008157 is about 393.6672639804.

The spelling of 61008157 in words is "sixty-one million, eight thousand, one hundred fifty-seven".