150777221 has 8 divisors (see below), whose sum is σ = 176324544. Its totient is φ = 126231840.

The previous prime is 150777157. The next prime is 150777229. The reversal of 150777221 is 122777051.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 150777221 - 2⁶ = 150777157 is a prime.

It is a super-4 number, since 4×150777221⁴ (a number of 34 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150777229) 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, 250160 + ... + 250761.

It is an arithmetic number, because the mean of its divisors is an integer number (22040568).

Almost surely, 2^150777221 is an apocalyptic number.

It is an amenable number.

150777221 is a deficient number, since it is larger than the sum of its proper divisors (25547323).

150777221 is an equidigital number, since it uses as much as digits as its factorization.

150777221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500971.

The product of its (nonzero) digits is 6860, while the sum is 32.

The square root of 150777221 is about 12279.1376325864. The cubic root of 150777221 is about 532.2453936500.

The spelling of 150777221 in words is "one hundred fifty million, seven hundred seventy-seven thousand, two hundred twenty-one".