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551150157 = 31931131091
BaseRepresentation
bin100000110110011…
…110001001001101
31102102002022212210
4200312132021031
52112043301112
6130405021033
716441461525
oct4066361115
91372068783
10551150157
112631232a8
121346b4779
138a253b6c
14532ac685
15335bdb3c
hex20d9e24d

551150157 has 16 divisors (see below), whose sum is σ = 776056320. Its totient is φ = 346964400.

The previous prime is 551150123. The next prime is 551150161. The reversal of 551150157 is 751051155.

It is not a de Polignac number, because 551150157 - 27 = 551150029 is a prime.

It is a super-2 number, since 2×5511501572 = 607532991122249298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551150177) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2182 + ... + 33272.

It is an arithmetic number, because the mean of its divisors is an integer number (48503520).

Almost surely, 2551150157 is an apocalyptic number.

551150157 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

It is an amenable number.

551150157 is a deficient number, since it is larger than the sum of its proper divisors (224906163).

551150157 is a wasteful number, since it uses less digits than its factorization.

551150157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31424.

The product of its (nonzero) digits is 4375, while the sum is 30.

The square root of 551150157 is about 23476.5874223661. The cubic root of 551150157 is about 819.8919930121.

The spelling of 551150157 in words is "five hundred fifty-one million, one hundred fifty thousand, one hundred fifty-seven".

Divisors: 1 3 19 57 311 933 5909 17727 31091 93273 590729 1772187 9669301 29007903 183716719 551150157