20957554 has 8 divisors (see below), whose sum is σ = 32803200. Its totient is φ = 10023156.

The previous prime is 20957537. The next prime is 20957561. The reversal of 20957554 is 45575902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227754 + ... + 227845.

It is an arithmetic number, because the mean of its divisors is an integer number (4100400).

Almost surely, 2^20957554 is an apocalyptic number.

20957554 is a deficient number, since it is larger than the sum of its proper divisors (11845646).

20957554 is a wasteful number, since it uses less digits than its factorization.

20957554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455624.

The product of its (nonzero) digits is 63000, while the sum is 37.

The square root of 20957554 is about 4577.9421140945. The cubic root of 20957554 is about 275.7064108388.

The spelling of 20957554 in words is "twenty million, nine hundred fifty-seven thousand, five hundred fifty-four".