402356554 has 4 divisors (see below), whose sum is σ = 603534834. Its totient is φ = 201178276.

The previous prime is 402356551. The next prime is 402356567. The reversal of 402356554 is 455653204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 324828529 + 77528025 = 18023^2 + 8805^2 .

It is not an unprimeable number, because it can be changed into a prime (402356551) by changing a digit.

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, 100589137 + ... + 100589140.

Almost surely, 2^402356554 is an apocalyptic number.

402356554 is a deficient number, since it is larger than the sum of its proper divisors (201178280).

402356554 is a wasteful number, since it uses less digits than its factorization.

402356554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201178279.

The product of its (nonzero) digits is 72000, while the sum is 34.

The square root of 402356554 is about 20058.8273336205. The cubic root of 402356554 is about 738.2504040325.

The spelling of 402356554 in words is "four hundred two million, three hundred fifty-six thousand, five hundred fifty-four".