61557074 has 16 divisors (see below), whose sum is σ = 97389600. Its totient is φ = 29100384.

The previous prime is 61557061. The next prime is 61557091. The reversal of 61557074 is 47075516.

61557074 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22214 + ... + 24830.

It is an arithmetic number, because the mean of its divisors is an integer number (6086850).

Almost surely, 2^61557074 is an apocalyptic number.

61557074 is a deficient number, since it is larger than the sum of its proper divisors (35832526).

61557074 is a wasteful number, since it uses less digits than its factorization.

61557074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3257.

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 61557074 is about 7845.8316321471. The cubic root of 61557074 is about 394.8444059510.

The spelling of 61557074 in words is "sixty-one million, five hundred fifty-seven thousand, seventy-four".