61061554 has 32 divisors (see below), whose sum is σ = 99532800. Its totient is φ = 28002960.

The previous prime is 61061551. The next prime is 61061579. The reversal of 61061554 is 45516016.

It is not an unprimeable number, because it can be changed into a prime (61061551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 319599 + ... + 319789.

It is an arithmetic number, because the mean of its divisors is an integer number (3110400).

Almost surely, 2^61061554 is an apocalyptic number.

61061554 is a deficient number, since it is larger than the sum of its proper divisors (38471246).

61061554 is a wasteful number, since it uses less digits than its factorization.

61061554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 61061554 is about 7814.1892733668. The cubic root of 61061554 is about 393.7820820756.

The spelling of 61061554 in words is "sixty-one million, sixty-one thousand, five hundred fifty-four".