100000401554 has 16 divisors (see below), whose sum is σ = 158836224888. Its totient is φ = 47055439872.

The previous prime is 100000401547. The next prime is 100000401559. The reversal of 100000401554 is 455104000001.

It can be written as a sum of positive squares in 4 ways, for example, as 70063443025 + 29936958529 = 264695^2 + 173023^2 .

It is a super-2 number, since 2×100000401554² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100000401559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373322 + ... + 582554.

Almost surely, 2^100000401554 is an apocalyptic number.

100000401554 is a deficient number, since it is larger than the sum of its proper divisors (58835823334).

100000401554 is a wasteful number, since it uses less digits than its factorization.

100000401554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223309.

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 100000401554 its reverse (455104000001), we get a palindrome (555104401555).

The spelling of 100000401554 in words is "one hundred billion, four hundred one thousand, five hundred fifty-four".