90110001554 has 4 divisors (see below), whose sum is σ = 135165002334. Its totient is φ = 45055000776.

The previous prime is 90110001547. The next prime is 90110001581. The reversal of 90110001554 is 45510001109.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45510001109 = 59 ⋅771355951.

It can be written as a sum of positive squares in only one way, i.e., 71864205625 + 18245795929 = 268075^2 + 135077^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22527500387 + ... + 22527500390.

Almost surely, 2^90110001554 is an apocalyptic number.

90110001554 is a deficient number, since it is larger than the sum of its proper divisors (45055000780).

90110001554 is a wasteful number, since it uses less digits than its factorization.

90110001554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45055000779.

The product of its (nonzero) digits is 900, while the sum is 26.

The spelling of 90110001554 in words is "ninety billion, one hundred ten million, one thousand, five hundred fifty-four".