11977554 has 16 divisors (see below), whose sum is σ = 25364448. Its totient is φ = 3757632.

The previous prime is 11977541. The next prime is 11977579. The reversal of 11977554 is 45577911.

11977554 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58612 + ... + 58815.

It is an arithmetic number, because the mean of its divisors is an integer number (1585278).

Almost surely, 2^11977554 is an apocalyptic number.

11977554 is an abundant number, since it is smaller than the sum of its proper divisors (13386894).

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

11977554 is a wasteful number, since it uses less digits than its factorization.

11977554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117449.

The product of its digits is 44100, while the sum is 39.

The square root of 11977554 is about 3460.8602976717. The cubic root of 11977554 is about 228.8000135500.

The spelling of 11977554 in words is "eleven million, nine hundred seventy-seven thousand, five hundred fifty-four".