406151506 has 4 divisors (see below), whose sum is σ = 609227262. Its totient is φ = 203075752.

The previous prime is 406151497. The next prime is 406151509. The reversal of 406151506 is 605151604.

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., 386712225 + 19439281 = 19665^2 + 4409^2 .

It is not an unprimeable number, because it can be changed into a prime (406151509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101537875 + ... + 101537878.

Almost surely, 2^406151506 is an apocalyptic number.

406151506 is a deficient number, since it is larger than the sum of its proper divisors (203075756).

406151506 is a wasteful number, since it uses less digits than its factorization.

406151506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203075755.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 406151506 is about 20153.2008872040. The cubic root of 406151506 is about 740.5641582973.

The spelling of 406151506 in words is "four hundred six million, one hundred fifty-one thousand, five hundred six".