361621051 has 4 divisors (see below), whose sum is σ = 394495704. Its totient is φ = 328746400.

The previous prime is 361621033. The next prime is 361621061. The reversal of 361621051 is 150126163.

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

It is a cyclic number.

It is not a de Polignac number, because 361621051 - 2¹³ = 361612859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (361621021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16437310 + ... + 16437331.

It is an arithmetic number, because the mean of its divisors is an integer number (98623926).

Almost surely, 2^361621051 is an apocalyptic number.

361621051 is a deficient number, since it is larger than the sum of its proper divisors (32874653).

361621051 is a wasteful number, since it uses less digits than its factorization.

361621051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32874652.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 361621051 is about 19016.3364242432. The cubic root of 361621051 is about 712.4448224840. Note that the first 3 decimals are identical.

The spelling of 361621051 in words is "three hundred sixty-one million, six hundred twenty-one thousand, fifty-one".